title: The early expression of protective immunity to Fasciola hepatica in rats.
mesh_terms: D000818:Animals; D005210:Fasciola hepatica / Q000276:immunology*; D005211:Fascioliasis / Q000276:immunology; D007109:Immunity; D007117:Immunization, Secondary; D007422:Intestines / Q000469:parasitology*; D008297:Male; D051381:Rats