EFFECT OF THE DURATION OF SCHISTOSOMA MANSONI INFECTIONS ON THE DEGREE OF PROTECTION AGAINST SUBSEQUENT EXPOSURES.
D000818:Animals; D006224:Cricetinae; D007109:Immunity; D051379:Mice; D051381:Rats; D012106:Research; D012552:Schistosomiasis; D012555:Schistosomiasis mansoni
EXPERIMENTAL LAB STUDY; HAMSTERS; IMMUNITY; MICE; RATS; SCHISTOSOMIASIS