title: Serum pepsinogen concentrations of ponies naturally infected with trichostrongylus axei.
mesh_terms: D000818:Animals; D006734:Horse Diseases / Q000097:blood / Q000469:parasitology*; D006736:Horses; D010435:Pepsinogens / Q000097:blood*; D014252:Trichostrongyloidiasis / Q000097:blood*; D014253:Trichostrongylosis / Q000097:blood*
chemical_list: D010435:Pepsinogens