title: Susceptibility of Biomphalaria peregrina from Brazil and Ecuador to two strains of Schistosoma mansoni.
mesh_terms: D000818:Animals; D001700:Biomphalaria; D001938:Brazil; D004197:Disease Reservoirs; D004484:Ecuador; D012550:Schistosoma mansoni; D012552:Schistosomiasis / Q000453:epidemiology*