title: Protection to challenge with Trichinella spiralis after primary oral infection in congenitally athymic (nude) mice.
mesh_terms: D000818:Animals; D004804:Eosinophils / Q000276:immunology; D007111:Immunity, Cellular; D007070:Immunoglobulin A / Q000276:immunology; D008297:Male; D051379:Mice; D008819:Mice, Nude; D013601:T-Lymphocytes / Q000276:immunology; D014235:Trichinellosis / Q000276:immunology*
chemical_list: D007070:Immunoglobulin A