title: Studies on Q fever; complement-fixing antibodies in meat packers at Fort Worth, Texas.
mesh_terms: D003165:Complement System Proteins; D006801:Humans; D055633:Immune System Phenomena; D007109:Immunity; D008460:Meat; D011778:Q Fever; D013781:Texas
chemical_list: D003165:Complement System Proteins
keywords: COMPLEMENT/fixation; Q FEVER/immunity