title: Purification of complement-fixing antigens of Rickettsia orientalis by ether extraction.
mesh_terms: D000941:Antigens / Q000302:isolation & purification*; D003168:Complement Fixation Tests; D005019:Ethyl Ethers; D005612:Freeze Drying; D006358:Hot Temperature; D007106:Immune Sera; D007120:Immunochemistry; D008722:Methods; D010504:Periodic Acid; D012281:Rickettsia / Q000276:immunology*; D012612:Scrub Typhus / Q000276:immunology; D012995:Solubility; D014357:Trypsin / Q000494:pharmacology
chemical_list: D000941:Antigens; D005019:Ethyl Ethers; D007106:Immune Sera; D010504:Periodic Acid; D014357:Trypsin