title: Letter: Microbial-antigen detection and complex antisera.
mesh_terms: D000942:Antigens, Bacterial / Q000302:isolation & purification*; D007106:Immune Sera; D007122:Immunoelectrophoresis; D007158:Immunologic Techniques; D011863:Radioimmunoassay
chemical_list: D000942:Antigens, Bacterial; D007106:Immune Sera