[Histochemical studies on some enzymes in Clonorchis sinensis]

The localization of some enzyme in adult worms of Clonorchis sinensis was studied by histochemical method in this paper. Acid phosphatase was detected mainly in digestive duct, subtegument and the walls of testis, uterus and ovary; acetylcholinesterase was found in oral sucker, ventral sucker, pharynx; and ATPase was found to exist in oral sucker, ventral sucker, pharynx and muscle layer in the subtegument. The eggs of C. sinensis possessed the above three enzymes.