title: Effect of some factors upon the susceptibility of Biomphalaria alexandrina to infection with Schistosoma mansoni.
mesh_terms: D000818:Animals; D001700:Biomphalaria / Q000469:parasitology*; D003624:Darkness; D004199:Disease Vectors / Q000469:parasitology; D009391:Nephelometry and Turbidimetry; D012555:Schistosomiasis mansoni / Q000469:parasitology*