title: [Immunological significance of respiratory secretion].
mesh_terms: D000818:Animals; D001980:Bronchi / Q000166:cytology / Q000276:immunology*; D006168:Guinea Pigs; D006801:Humans; D007136:Immunoglobulins / Q000032:analysis*; D009093:Mucus / Q000276:immunology*
chemical_list: D007136:Immunoglobulins