title: Letter: Protective activity of whooping-cough convalescent serum and serum-IgA level in mice infected with Bordetella pertussis.
mesh_terms: D000818:Animals; D001886:Bordetella pertussis / Q000276:immunology*; D002648:Child; D006801:Humans; D007112:Immunity, Maternally-Acquired; D007116:Immunization, Passive; D007070:Immunoglobulin A; D051379:Mice; D014917:Whooping Cough / Q000276:immunology / Q000517:prevention & control*
chemical_list: D007070:Immunoglobulin A