A transmission electron microscopic study was conducted in order to know basic tegumental structure of Cysticercus cellulosae which was obtained from the ventricles of human brain. In general, the electron microscopic appearance of the tegument resembled that of the body wall of adult and larval forms of other cestodes. The tegument both of the parenchymatous portion (scolex and spiral canal) and bladder portion consisted of such components , i.e., an outer vesicular layer with microtriches, and an inner fibrous layer. The subtegumental tissue below the fibrous layer was filled with muscle bundles and tegumental cells. The surface of the larva was covered by the microtriches of two distictly different types. The characteristic pyramid-shaped "tetrahedral" form was observed on the surface of the scolex portion, whereas the elongated, slender "filamentous" microtriches were distributed on the regions of the spiral canal and bladder portion. The tegumental and subtegumental tissues varied in thickenss from one region to the next. The possibility of application in making differential diagnosis from other larval cestodes and possible fuction of this larval tegument were discussed.
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Subcutaneous cysticercosis diagnosed by mitochondrial DNA analysis Yi‐Chin Shih, Chien‐Ming Chen, Yu‐Huei Huang, Chein‐Wei Liao, Chia‐Kwung Fan, Chih‐Hsun Yang International Journal of Dermatology.2010; 49(6): 672. CrossRef
Studies on the bladder worm, Cysticercus cellulosae: The ultrastructure of C. cellulosae Soon Hyung Lee The Korean Journal of Parasitology.1983; 21(1): 75. CrossRef
Based on 16 cases of human sparganosis, a histopathological study was made. There was a striking similarity among histological features of sparganosis involving different tissues. The histological change of the affected tissues was characterized by a necrotizing and granulomatous inflammation with or without worm parasite in the lesions.
There was also a remarkable polymorphonuclear leukocytic mobilization, predominantly of eosinophils, plasma cells and lymphocytes in and near the lesions. Tunnel formation lined by palisading histiocytes was another charateristic feature of the host tissue reaction. These findings were quite distinguishable from those of cysticercosis which were more localized and self-limited. Several features that were prominent in section slides of sparganum worm parasite were also noted. Laminated calcospherules found in the cytoplasm of the proliferating macrophages and giant cells were of diagnostic value of sparganosis in the absence of the worm, particularly when these were accompanied with tunnel-like lesion in the host tissue.
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The nucleotide sequence and predicted secondary structure of small subunit (18S) ribosomal RNA from Spirometra erinaceieuropaei Dian-Wu Liu, Hisaharu Kato, Kazuo Sugane Gene.1997; 184(2): 221. CrossRef
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Characterization of three neutral proteases of Spirometra mansoni plerocercoid Y. Kong, Y.-B. Chung, S.-Y. Cho, S.-H. Choi, S.-Y. Kang Parasitology.1994; 108(3): 359. CrossRef
Cleavage of immunoglobulin G by excretory–secretory cathepsin S-like protease ofSpirometra mansoniplerocercoid Y. Kong, Y.-B. Chung, S.-Y. Cho, S.-Y. Kang Parasitology.1994; 109(5): 611. CrossRef
Histopathological Changes of the Cat Brain in Experimental Sparganosis Sun Huh, Kyu-Chang Wang, Sung-Tae Hong, Jong-Yil Chai, Soon-Hyung Lee, Kil-Soo Choi, Je G. Chi Pathology - Research and Practice.1993; 189(10): 1181. CrossRef
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Cerebral sparganosis: analysis of 34 cases with emphasis on CT features K. H. Chang, J. G. Chi, S. Y. Cho, M. H. Han, D. H. Han, M. C. Han Neuroradiology.1992; 34(1): 1. CrossRef
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Immunohistochemical observation on the antigens inducing IgG and IgM antibodies against sparganum C H Kim, W S Choi The Korean Journal of Parasitology.1991; 29(4): 339. CrossRef
Cerebral sparganosis caused by Spirometra mansonoides Arturo Landero, Fortino Hernandez, Mario A. Abasolo, D. Antonio Rechy, Patricia Nuñez Journal of Neurosurgery.1991; 75(3): 472. CrossRef
The fate of spargana inoculated into the cat brain and sequential changes of anti-sparganum IgG antibody levels in the cerebrospinal fluid K C Wang, S Huh, S T Hong, J Y Chai, K S Choi, S H Lee The Korean Journal of Parasitology.1990; 28(1): 1. CrossRef
Leukocyte accumulation in sparganosis: further characterization of an eosinophil chemotactic factor of the plerocercoid ofSpirometra erinacei Y. Horii, M. Owhashi, A. Ishii, K. Fujita Journal of Helminthology.1989; 63(1): 6. CrossRef
Sparganosis of the brain Shigetaka Anegawa, Takashi Hayashi, Katsuyasu Ozuru, Shinken Kuramoto, Kenichi Nishimura, Takashi Shimizu, Mizuki Hirata Journal of Neurosurgery.1989; 71(2): 287. CrossRef
The changes of histopathology and serum anti-sparganum IgG in experimental sparganosis of mice S T Hong, K J Kim, S Huh, Y S Lee, J Y Chai, S H Lee, Y S Lee The Korean Journal of Parasitology.1989; 27(4): 261. CrossRef
A comparative study on eosinophil and neutrophil chemotactic activities of various helminth parasites Y. Horii, M. Owhashi, K. Fujita, H. Nakanishi, A. Ishii Parasitology Research.1988; 75(1): 76. CrossRef
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A new anthelmintic, amidantel(Bay d 8815), an acetylated p-amino-phenyl-acetamidine was tried in 140 patients with Ancylostoma duodenale and other helminth infections. In the first trial, each 16 cases in 64 patients with A. duodenale were treated with 3.0, 6.0 and 9.0 or 10.0 mg/kg body weight of amidantel including placebo control. Another 76 patients infected with hookworms and other helminths were treated with 5.0, 6.0 and 8.0 mg/kg body weight of amidantel in the second trial. In order to assess the efficacy and safety of the drug, follow-up examination by repeated and replicated examinations over three consecutive days were performed at 14 to 16 days and 28 to 30 days after treatment, And complete laboratory studies including ECG were carried out before and one day after the medication. In the results, it was confirmed that amidantel is very effective against A.
duodenale as well as Ascaris lumbricoides. With regard to dosage, a single dose of 6.0 mg/kg body weight of amidantel was found to be the most effective and well tolerated than the other dosages employed. In a single dose of 6.0 mg/kg body weight the cure rates were 93.8 and 96.6 per cent for A. duodenale infection and 90.9 and 93.1 per cent for ascariasis in the first and second trials respectivley.
Relatively significant activity was also observed against Necator americanus at the dosages employed, however it was not superior to other drugs currently use. No significant activity was noted against Trichuris trichiura. Side effects including headache, nausea, dizziness and abdominal discomfort were usually mild and transient. No significant changes attributable to therapy were observed in hematology, blood biochemistry and urinalysis as well as ECG.
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To observe the effect of egg-free state in an institute on the endemicity of Enterobius vermicularis, the theoretical condition was made by repeated chemotherapy. Mebendazole or pyrantel pamoate were administered to all orphans and their staffs concomitantly for four times, each 20-day interval.
In two low endemic orphanages, in which mean egg positive rates were 18 % and 39 % respectively, the pinworm infection was controlled up to 6-7 months period. And other two highly endemic orphanages, with 70% and 55% of egg positive rates, were controlled up to 90th day after the first treatment.
After then up to 7 months, the reinfection occurred, but the endemicity was brought down to about 20 % of egg positivity.
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Negligible Egg Positive Rate of <i>Enterobius vermicularis</i> and No Detection of Head Lice among Orphanage Children in Busan and Ulsan, Korea (2014) Dong-Hee Kim, Hyun-Mi Son, Sang Hwa Lee, Mi Kyung Park, Shin Ae Kang, Sang Kyun Park, Jun-Ho Choi, Jung Ha Park, Hak-Sun Yu The Korean Journal of Parasitology.2015; 53(4): 497. CrossRef
Parasitic Diseases in Children Sun Huh Journal of the Korean Medical Association.2004; 47(6): 512. CrossRef
Chemotherapeutic trial to control enterobiasis in schoolchildren Y S Yang, S W Kim, S H Jung, S Huh, J H Lee The Korean Journal of Parasitology.1997; 35(4): 265. CrossRef
Prevalence of Enterobius vermicularis infection and preventive effects of mass treatment among children in rural and urban areas, and children in orphanages J S Kim, H Y Lee, Y K Ahn The Korean Journal of Parasitology.1991; 29(3): 235. CrossRef
Status of Enterobius vermicularis Iifection in primary school children, Yongyang-Kun, Kyongbuk Province Son Ho, Chan Byong Park The Korean Journal of Parasitology.1984; 22(1): 138. CrossRef
Morphological observation of Enterobius vermicularis expelled by various anthelmintics Seung Yull Cho, Sung Tae Hong, Shin Yong Kang, Chul Yong Song The Korean Journal of Parasitology.1981; 19(1): 18. CrossRef
Selection criteria of subjects for drug evaluation in enterobiasis Seung Yull Cho, Sung Tae Hong, Jong Yil Chai, Byong Seol Seo The Korean Journal of Parasitology.1980; 18(1): 45. CrossRef
When an antipinworm drug was evaluated in human being, the results are still variable according to authors. Among the various factors involved in these variable results, the selection of subjects must be one of them. In the past, in evaluating a drug, the subjects were simply anal swab positive cases in a population. By that kind of selection method, especially in low endemic population, anal swab positives spontaneously turned to egg negatives at random.
Moreover, the time, frequency of negative conversion cannot be predicted. By the results, the cure rates obtained from such ill-defined subjects are variable according to the subjected population. Another problem is that evaluation should represent the efficacy in heavily infected cases. To reinforce and overcome such shortcomings, the evaluator shoud select the cases wha are infected with whole developmental stages of worm. And the evaluator should have a method selecting such ideal cases only with anal swabs. To find out such method the results of anal swabs of long-term follow-up without any antipinworm treatment were reevaluated. In 41 children from 6 orphanages of different endemicity, swabs were taken for 8 or 21 times during 36 or 91 days. The positive rate of follow-up swabs was compared with that of already obtained in 4 preliminary swabs. And we collected other data on the combination of 4 anal swab results in different endemicity. The results are as follows: The positive rate of follow-up swabs was significantly different by the consecutiveness of egg positivity in preliminary swabs as well as the endemicity of subjected population. The consecutively positive cases in higher endemicity over 60% showed the highest, and the least variable positive rate in follow-up swabs. The observed frequency of consecutively positive/consecutively negative combination was always higher than the expected one obtained by binomial distribution equation. This indicates that individual hygiene and previous infection are important factors in determining the actual occurrence of subsequent reinfection. Summarizing these results, the subjects for drug evaluation should be those of consecutively positive cases in population over 60% endemicity. These subjects have the lowest chance of spontaneous negative conversion at random period of follow-up swabs. Eligible cases for such criteria would be sufficiently secured in highly endemic population.
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Prevalence of Enterobius vermicularis infection and preventive effects of mass treatment among children in rural and urban areas, and children in orphanages J S Kim, H Y Lee, Y K Ahn The Korean Journal of Parasitology.1991; 29(3): 235. CrossRef
Recent patterns of Enterobius vermicularis infection in some school children, Korea Yong Suk Ryang The Korean Journal of Parasitology.1988; 26(3): 215. CrossRef
Studies were conducted to determine the ecology of the snail, Parafossarulus manchouricus, the seasonal variation of the snail population, and the infestation rates of these snails with the cercariae of digenetic trematodes, in the snail habitat of river Kumho, in Dongchon of Taegu city, in Kyungpook Province, Korea, from 1975 to 1979. The earliest time the snails were found was early in April every year. At that time the water temperature ranged from 13 to 14 degrees C. The population density of snails ranged from 2 to 8 per square meter. The highest population density of snails was encountered in late June and the water temperature was between 24 and 26 degrees C. The snails disappeared in early and mid-November, when the water temperature dropped to 10-13 degrees C. The average snail population in June was 115.9 per square meter in 1975 but in 1976 dropped abruptly to 30.5 and remained at approximately the same level in 1977. It then decreased at considerably lower rates, with the average of 18.7 in 1978 and 14.5 in 1979. The snails collected in the habitat were examined for the presence of cercariae of digenetic trematodes. Of these, four species, Clonorchis sinensis, Cyathocotyle orientalis, Exorchis oviformis, and Loxogenes liberum were found. The most frequently liberated cercaria was L. liberum 43.3 per cent, followed by E. oviformis 6.2 per cent and C. orientalis 1.5 per cent. The least frequently liberated was C. sinensis 0.1 per cent. In the monthly liberation rates for larval trematodes, the higher rates were observed in June, July and August every year, and the cercarial rates for Clonorchis sinensis, Cyathocotyle orientails and Exorchis oviformis demonstrate a fairly consistently fluctuating downward trend over the five-year period, except for Loxogenes liberum.
Summarizing the results, this study indicated that the population density of snails in the habitat and the infection of the snail with the cercariae of digenetic trematodes has decreased over the five-year period from 1975 to 1979.
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Changing patterns of Clonorchis sinensis infections in Kyongbuk, Korea C Y Joo, M S Chung, S J Kim, C M Kang The Korean Journal of Parasitology.1997; 35(3): 155. CrossRef
A study on the body fluid antigen of Clonorchis sinensis using immunogold labeling method B D Chu, H J Rim, S J Kim The Korean Journal of Parasitology.1990; 28(1): 11. CrossRef
Seasonal variations of metacercarial density of Clonorchis sinensis in fish intermediate host, Pseudorasbora parva Shin Yong Kang, Suk Il Kim, Seung Yull Cho The Korean Journal of Parasitology.1985; 23(1): 87. CrossRef
Epidemiological studies on Clonorchis sinensis infection along the Nam-river in Gyeongnam province, Korea Kyoung Hoon Bae, Yung Kyum Ahn, Chin Thack Soh, Hiroshi Tsutsumi The Korean Journal of Parasitology.1983; 21(2): 167. CrossRef
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The wormicidal substances of fresh water fishes on Clonorchis sinensis III. Seasonal variation on the wormicidal substances of mucous substances of Carassius carassius Jae Ku Rhee, Byeong Kirl Baek, Byung Zun Ahn, Young Jun Park The Korean Journal of Parasitology.1980; 18(2): 179. CrossRef
Experimentally infected rats with 50 metacercariae of Clonorchis sinensis each were treated orally with different dosages of praziquantel. About 100 rats were divided into 8 groups in each developmental week after infection (from the first to 8th week after infection) and 24 rats served as untreated controls. In each developmental week after infection, about 15 rats divided into 4groups including control group(3 to 5 rats) were used to determine for the curative activity of praziquantel against C. sinensis. The experimentally infected rats in each developmental weeks after infection received praziquantel 1 x 100 mg/kg x 3 days , 3 x 100 mg/kg x 1 day and 3 x 100 mg/kg x 2 days. The effects of the drug were evaluated by the worm recovery rates, morphological changes of the worms and the number of eggs per gram of feces (EPG) after treatment. The feces of individual rats were collected once in a week at one week before and 4 weeks after treatment, and the number of Clonorchis eggs were examined by Stoll's egg counting method. The necropsy was performed on 4 weeks after treatment. The liver and the bile ducts were examined immediately after the dissection, and all of the worms recovered from the liver immersed in warm saline solution in a small petri dish in order to observe the motility of individual worms. After that, all worms obtained from the treated and untreated control rats were fixed in 10 percent formalin solution. The whole mount specimens were prepared by Semichon's acetocarmine stain for the study of morphlogical changes. In the treatment with dosage of 1 X 100 mg/kg for 3 consecutive days, relatively low worm recovery rates were shown in the early stages of infection than those of control groups. However there was no differences of the worm recovery rates between the later stages of infection (7 to 8 weeks after infection) and control groups. In the early stages of infection, the worms recovered in the bile ducts of each treated rats showed morphologically intact as normal control groups, however in the later stages of infection the worms showed damage of their reproductive organs such as testes, seminal receptacle and ovary etc. In the treatment with dosage of 3 X100 mg/kg X 1 day, the recovery rates of the worms in all developmental weeks after infection were considerably low and some growth inhibition of the worms were also noted. The worms recovered from the bile ducts in all developmental stages were seriously damaged in their reproductive organs, such as testes, seminal receptacle, ovary, Mehlis' gland, uterus and vitelline glands etc. The hyaline degenerations were also observed on the parenchymal tissues in the dead worms. The mean EPG values in this group were markedly reduced at the first 2 weeks after treatment. However the low values of EPG were generally noted at the 3rd to 4th week after treatment. On the other hand, in the treatment with dosage of 3 X 100 mg/kg X 2 days, no more the living worms was recovered in all developmental stages of Clonorchis . The dead worms recovered from the bile ducts were so seriously damaged that the morphological changes could not be observed. The mean EPG values in this group were markedly reduced during the first 2 weeks after treatment. At the 3rd week after treatment EPG value became negative in the most of all treated groups. No more the Clonorchis eggs were detected at the 4th week after infection, but only a very small numbers of eggs were found by the concentration method. From the above results, it is obvious that praziquantel exhibits a high degree of activity against Clonorchis sinensis in the rats, with no apparent differences in the efficacy against each developmental stage.
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A morphological study on the ultrastructures of the alimentary tract and the excretory system of Clonorchis sinensis was conducted. The liver flukes were collected from rabbit liver six months after the experimental infection The worms were washed with 0.85 percent saline solution and immediately moved to cold 2.5 percent glutaraldehyde in 0.1 M phosphate buffer pH 7.4. The materials were dissected and fixed for two hours. The blocks were post-fixed in 1 percent osmium tetroxide. The blocks were embedded in Epon 812.
Ultra thin sections were cut with Sovall MT-2 ultramicrotome and stained with uranyl acetate and lead citrate. Sections were then observed with Hitachi HS-7S electron microscope.
The following results were obtained in a series of observations. The walls of oral cavity and esophagus comprised tegumental syncytium, basement membrane, loose connective tissue, muscular layer and parenchymal cells. The apical surface and the base of the syncytium were covered with a protoplasmic membrane for each forming numerous invaginations. Granular endoplasmic reticulum was developed in the epithelium of the oesophagus. The gastrodermis of Clonorchis sinensis comprised two types of cells in general.
The first cell type was numerous one forming a single continuous layer of epithelial cells. Each of the cells had outfolded cytoplasm into the caecal lumen and lamellae along the cell surface. Among the above epithelial cells, no considerable differences in structure reflecting their functional states were identified. The second cell type was less differentiated in nature and lay within the gastrodermis above the basement membrane but not in contact with the caecal lumen, being overlapped by neighboring gastrodermal cells of the type described above. At this portion the gastrodermis seemed to be a pseudostratified epithelium. There were well-developed lamellae along the surface of epithelia of all canals or duct concerning evacuation. The excretory pore was 7.5 micrometer in diameter and dorso-terminally opended. The epithelium of the excretory pore, a syncytial layer, contained many microtubules unlike the other part of tegumental layer of this worm. The epithelium thickness of the excretory pore was very irregular(1.3-5.5 micrometer).
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A study on the body fluid antigen of Clonorchis sinensis using immunogold labeling method B D Chu, H J Rim, S J Kim The Korean Journal of Parasitology.1990; 28(1): 11. CrossRef
Metamorphosis of the excretory system of Paragonimus ohirai (Trematoda), with special reference to its functional significance Yasuhide Orido Journal of Morphology.1987; 194(3): 303. CrossRef
A Study on the structure of Clonorchis sinensis, a liver fluke IV. Probable functions of the Laurer's canal Kye Heon Jeong The Korean Journal of Parasitology.1983; 21(2): 209. CrossRef
A study on the ultrastructures of the prostate gland of Clonorchis sinensis was conducted. The presence of the prostate gland in this fluke has not been known up to present time. Authors observed the ejaculatory duct epithelium including its surrounding parenchyma and found the prostate gland with the help of the electron microscope.
The prostate gland was consisted of numerous unicellular glands grouped around the ejaculatory duct. The individual cell was lobulated, tapering in the direction of the ejaculatory duct. The secreting ducts of the gland penetrated into the ejaculatory duct through the muscular layer and the basement membrane, and finally opened to the lumen of the ejaculatory duct. The secreting duct had single layered microtubules along the inner wall of the duct. The secretory bodies produced by the prostate gland seemed to be moved to the lumen of the ejaculatory duct through the secreting duct. The prostate gland of this fluke was less developed than that of Fasciola hepatica but the basic structures were quite similar. There were well-developed lamellae in the epithelia of all ducts concerning passage of spermatozoa from the testes to the male genital opening.
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Analysis of Clonorchis sinensis antigens and diagnosis of clonorchiasis using monoclonal antibodies T S Yong, K Im, P R Chung The Korean Journal of Parasitology.1991; 29(3): 293. CrossRef
Clonorchiasis in Korea H J Rim The Korean Journal of Parasitology.1990; 28(Suppl): 63. CrossRef
A Study on the structure of Clonorchis sinensis, a liver fluke IV. Probable functions of the Laurer's canal Kye Heon Jeong The Korean Journal of Parasitology.1983; 21(2): 209. CrossRef
The present work which was investigated in July 1979, was to observe the wormicidal effects of the external mucous substances of 9 species of fresh water fishes (Cyprinus carpio, Parasilurus asotus, Anguilla japonica, Ophicephalus argus, Carassius carassius; golden crusian carp, Misgurnus anguillicaudatus, Zacco platypus, Pseudorasbora parva and Carassius carassius; crusian carp) on cercaria, liberated metacercaria and adult of Clonorchis sinensis. The mucous substances extracted by ether from the above 9 species of fishes were separated into many spots on the silica gel thin layer chromatography, and divided into many fractions in the silica gel column chromatography which used petroleum ether (30 percent) and chloroform (70 percent) as a solvent. On the silica gel thin layer chromatography of ether extracts from 9 species of fresh water fishes, each of the Rf. values which had wormicidal effect on the cercaria of C. sinensis were different from others; Rf. value of C. carassius (crusian carp) was 0.937, 0.709 in O. argus, 0.612 in A.
japonica, 0.576 in P. asotus, 0.451 in C. carpio, 0.701 in Z. platypus, 0.385 in C. carassius(golden crusian carp) and 0.15 in P. parva. Time for wormicide was different from each other, too. It took 14 min. in a case of C.
carassius(crusian carp), 25 min. in Z. platypus, 26 min. in C. carassius(golden crusian carp), 28 min. in C. carpio, 30 min. in P. asotus, 35 min. in O. argus, 40 min. P. parva and 180 min. in A. japonica. But any of the spots of M.
anguillicaudatus did not show wormicidal effect on the cercaria within 10 hours. In the silica gel column chromatography of ether extracts from 9 species of fresh water fishes, the fractions which had wormicidal effect on the metacercaria of C. sienesis were different from each other; in a case of C. carassius(crusian carp), the first fraction only had wormicidal effect, the 2nd in P. asotus, the 3rd in O. argus, the 4th in C. carassius(golden crusian carp), the 2nd in C. carpio and the 4th in P. parva. Time for wormicide was 40 min. in C. carassius(crusian carp), 52 min. in P. asotus, 74 min. in C. carassius(golden crusian carp), 92 min. in O. argus, 95 min. in C. carpio and 140 min. in P. parva, but any of the fractions of A. japonicas, M. anguillicaudatus and Z. platypus did not show wormicidal effect within 10 hours. The fractions which had wormicidal effect on the metacercaria of C. sinensis had also the same effect on the adult, but it took longer time to kill them.
It took 3 hours in a case of C. carassius(crusian carp), 4 hrs. in C. carassius(golden crusian carp), 5 hrs. in P.
asotus, 6 hrs. and 6 min. in O. argus, 6 hrs. and 10 min. in C. carpio and half and 6 hrs. in P. parva. But any of the fractions of A. japonica, M. anguillicaudatus and Z.
platypus did not show wormicidal effect within 24 hrs.
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The wormicidal substances of fresh water fishes on Clonorchis sinensis VII. The effect of linoleic acid and ethyl linoleate on parasite viability Jae Ku Rhee, Sang Bork Lee, Pyung Gil Kim The Korean Journal of Parasitology.1988; 26(3): 175. CrossRef
Experimental studies on the second intermediate hosts of Clonorchis sinensis IV. Observations on the fate of metacercariae of Clonorchis sinensis in the fish host, Cultriculus eigenmanni Jae Ku Rhee, Byeong Kirl Baek, Ho Il Lee The Korean Journal of Parasitology.1985; 23(1): 79. CrossRef
Seasonal Effects on Clonorchicidal Substances from Epidermal Mucus of Cyprinus carpio, Ophicephalus argus and Parasilurus asotus JK Rhee, SB Lee, BK Baek The Korean Journal of Parasitology.1984; 22(1): 135. CrossRef
The wormicidal substance of fresh water fishes on Clonorchis sinensis V. Purification and chemical characterization of clonorchicidal substance from epidermal mucus of Cyprinus carpio Jae Ku Rhee, Sang Bork Lee, Byung Zun Ahn The Korean Journal of Parasitology.1984; 22(1): 127. CrossRef
Experimental Infection of Clonorchis sinensis to Cyprinus carpio nudus Jae Ku Rhee, Pyung Gil Kim, Byeong Kirl Baek, Sang Bork Lee, Byung Zun Ahn The Korean Journal of Parasitology.1983; 21(1): 11. CrossRef
The wormicidal substance of fresh water fishes on Clonorchis sinensis IV. Preliminary research on the wormicidal substance from mucus of Cyprinus carpio nudus Jae Ku Rhee, Pyung Gil Kim, Byeong Kirl Baek, Sang Bork Lee, Byung Zun Ahn The Korean Journal of Parasitology.1983; 21(1): 21. CrossRef
Epidemiological studies of Clonorchis sinensis in Mangyeong riverside areas in Korea Jae Ku Rhee, Byeong Kirl Baek, Sang Bork Lee, Hong Bum Koh The Korean Journal of Parasitology.1983; 21(2): 157. CrossRef
Localization and isolation of anthelmintic activity on Clonorchis sinensis from stem cortex of Machilis thunbergii Jae Ku Rhee, Byeong Kirl Baek, Byung Zun Ahn, Sung Hwan Oh The Korean Journal of Parasitology.1982; 20(1): 9. CrossRef
The wormicidal substances of fresh water fishes on Clonorchis sinensis III. Seasonal variation on the wormicidal substances of mucous substances of Carassius carassius Jae Ku Rhee, Byeong Kirl Baek, Byung Zun Ahn, Young Jun Park The Korean Journal of Parasitology.1980; 18(2): 179. CrossRef
Recent results of mass stool examination for parasitic infections revealed 0.01-0.0001 percent of Paragonimus egg positive rate in Seoul school-children. This survey was carried out to understand the infection status of intermediate hosts and their relations to human paragonimiasis in Seoul. Twelve mountainous streams in the outskirts of Seoul were surveyed. From all streams, Semisulcospira libertina, the snail intermediate host was not detected. From 7 streams 132 crayfishes, Cambaroides similis, the second intermediate host were collected. From them no metacercaria was found. The results indicated that crayfish in district of Seoul is no more an infection source of paragonimiasis. Possible factors related with the ecology of intermediate hosts were briefly discussed from the epidemiological view point.
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Paragonimus and paragonimiasis in Korea D W Choi The Korean Journal of Parasitology.1990; 28(Suppl): 79. CrossRef
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