title: Influence of freshwater trematodes in eastern Puerto Rico on schistosomiasis skin test results.
mesh_terms: D001700:Biomphalaria; D006801:Humans; D007814:Larva; D011647:Puerto Rico; D012552:Schistosomiasis / Q000175:diagnosis*; D012882:Skin Tests; D014200:Trematoda; D014867:Water
chemical_list: D014867:Water