[In vitro S. mansoni miracidia transformation (author's transl)].

Miracidia de S. mansoni hatched and collected aseptically are able to survive in vitro in suitable media. Development of the miracidia is observed in the same manner that occurs in vivo. They shed their ciliated epidermal cell and miracidium-sporocyst transformation occurs. 30% of the miracidia explanted are transformed in primary sporocystes into 48 h. and are still alive a week later.