Eight groups of outbred albino mice were infected transcutaneously with cercariae of S. mansoni (strains LE and SJ) irradiated with either 3, 20 or 40Krad, of gamma radiation from a cobalt-60 bomb and a control non irradiated group. Cercariae irradiated with 20 or 40 Kradfailed to develop in the portal system and3 Krad retarded development. Worms of the SJ strain developed more slowlt than the LE strain.
Schistosoma mansoni; Irradiated cercariae; Gamma irradiation; Schistogram