Antagonism of Echinostoma revolutum against Schistosoma mansoni in the snail Biomphalaria alexandrina.
D000818:Animals; D001700:Biomphalaria / Q000469:parasitology*; D004449:Echinostoma / Q000254:growth & development* / Q000302:isolation & purification; D008099:Liver / Q000469:parasitology; D051379:Mice; D012550:Schistosoma mansoni / Q000254:growth & development* / Q000302:isolation & purification; D013997:Time Factors