title: [Complement fixation reaction with rickettsial antigens in various age groups of the population].
mesh_terms: D000293:Adolescent; D000328:Adult; D000375:Aging; D000941:Antigens; D001798:Blood Proteins; D003168:Complement Fixation Tests; D006801:Humans; D008875:Middle Aged; D012281:Rickettsia / Q000276:immunology*; D012283:Rickettsia prowazekii / Q000276:immunology*; D014586:USSR
chemical_list: D000941:Antigens; D001798:Blood Proteins
vernacular_title: Reaktsiia sviazyvaniia komplementa s rikketsioznymi antigenami v razlichnykh vozrastnykh gruppakh naseleniia.