Greater resistance to development of severe schistosomiasis in Brazilian Negroes.
D000293:Adolescent; D044383:Black People; D001938:Brazil; D002648:Child; D005500:Follow-Up Studies; D006801:Humans; D007411:Intestinal Diseases, Parasitic / Q000235:genetics*; D044469:Racial Groups; D012550:Schistosoma mansoni; D012552:Schistosomiasis / Q000235:genetics*