title: The biology of Hyostrongylus ruidus. 3. Effect of host age on a primary infection.
mesh_terms: D000367:Age Factors; D000818:Animals; D005243:Feces; D013270:Stomach / Q000473:pathology; D013552:Swine; D013553:Swine Diseases / Q000276:immunology* / Q000473:pathology; D014251:Trichostrongyloidea; D014252:Trichostrongyloidiasis / Q000276:immunology / Q000473:pathology / Q000662:veterinary