[resistance of biomphalaria peregrina of santa rita do sapucaí, minas gerais, brazil to infection with 3 strains of schistosoma mansoni].the descendants of the planorbid snail biomphalaria peregrina, collected in the region of santa rita do sapucaí, minas gerais, brazil, were exposed to miracidia of three strains of schistosoma mansoni: "le" strain from belo horizonte, state of minas gerais; "sj", strain from são josé dos campos, state of são paulo and "al" strain from state of alagoas. of 300 snails exposed to miracidia of the three strains, none was infected. on the other hand, 300 biomphalaria glabrata of the control groups sh ...19883152277
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