Abstract: 　AIM: To observe the distribution of Schistosoma mansoni glucose transport proteins, SGTP1 and SGTP4, in the tegument of Schistosoma japonicum . METHODS: The rapidly frozen fixation technique and ultracryomicrotomy were adopted for preparing ultrathin cryosections of S.japonicum . Anti-SGTP1 and anti-SGTP4 antibodies were used to localize the corresponding antigens in the tegument of adult S.japonicum by immunocytochemical technique. RESULTS: SGTP1 was localized on the basal membrane of the tegument and its infoldings, SGTP4 was localized on the apical membrane of the tegument and its invaginations of S.japonicum . CONCLUSION: The same localization for SGTP 1 and SGTP4 in the tegument of S.japonicum and S. mansoni exhibited apparent homology between SGTPs of the two schistosomes.

Key words: Schistosoma japonicum, glucose transporter, immunocytochemistry