[Effect of testosterone or progesterone implants on the intensity of experimental infestation with Schistosoma mansoni in the female golden hamster].

When administered in pellet form of 20 mg to castrated Golden female hamsters, testosterone leads to a decrease of the intensity of experimental infestation with Schistosoma mansoni. The same result is obtained when estradiol is used in place of testosterone under the same conditions. On the contrary, no statiscally significant decrease has been observed with progesterone.