title: Studies on resistance in snails: interference by nonirradiated echinostome larvae with natural resistance to Schistosoma mansoni in Biomphalaria glabrata.
mesh_terms: D000818:Animals; D001700:Biomphalaria / Q000276:immunology* / Q000469:parasitology; D004449:Echinostoma / Q000276:immunology*; D012550:Schistosoma mansoni / Q000276:immunology*