Affiliation: | Department of Protozoology, Institute of Tropical Medicine, Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan;Central Laboratory, Institute of Tropical Medicine, Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan;Department of Parasitology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330 Thailand |