title: Reactions with hemagglutinin of psittacosis agent in gel diffusion.
mesh_terms: D000818:Animals; D000941:Antigens; D001826:Body Fluids / Q000276:immunology; D002642:Chick Embryo; D002689:Chlamydia / Q000276:immunology*; D002690:Chlamydia Infections / Q000276:immunology*; D003168:Complement Fixation Tests; D046508:Culture Techniques; D005321:Extraembryonic Membranes / Q000276:immunology; D006383:Hemadsorption Inhibition Tests; D007106:Immune Sera; D005779:Immunodiffusion
chemical_list: D000941:Antigens; D007106:Immune Sera