Different species and geographic strains of Biomphalaria as hosts for Schistosoma mansoni (Saudi Arabia strain).
D000818:Animals; D001700:Biomphalaria / Q000469:parasitology*; D004463:Ecology; D006801:Humans; D012529:Saudi Arabia / Q000208:ethnology; D012550:Schistosoma mansoni / Q000254:growth & development*; D012552:Schistosomiasis / Q000469:parasitology*; D013045:Species Specificity; D013781:Texas