1Department of Biochemistry, College of Natural Science, Chungbuk National University, Cheongju, Chungbuk 361-763, Korea.
2Bacteriology and Parasitology Division, National Veterinary Research and Quarantine Service, Anyang 430-824, Korea.
3Institute of BioMedicals, Bioland Ltd., Ochang, Chungbuk 363-883, Korea.
4Department of Medical Environmental Biology, College of Medicine, Chung-Ang University, Seoul 156-756, Korea. JFIF d d Ducky d qhttp://ns.adobe.com/xap/1.0/