1Department of Parasitology and Medical Research Institute, Chungbuk National University School of Medicine, Cheongju 361-763, Korea.
2Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 110-799, Korea.
3Department of Environmental Medical Biology & Institute of Tropical Medicine, Yonsei University College of Medicine, Seoul 120-752, Korea.
4Department of Microbiology and Immunology, Eulji University College of Medicine, Daejeon 301-746, Korea. JFIF d d Ducky d qhttp://ns.adobe.com/xap/1.0/