title: [Hard of soft hemolytic systems in the practice of complement fixation reaction].
mesh_terms: D000371:Agglutination; D000818:Animals; D002417:Cattle; D003168:Complement Fixation Tests / Q000379:methods*; D004912:Erythrocytes; D006801:Humans; D051379:Mice; D012995:Solubility
vernacular_title: Zur Frage des harten oder weichen hämolytischen Systems in der Praxis der Komplementbindungsreaktion