title: An improved antigen for the paratuberculosis complement fixation test.
mesh_terms: D000818:Animals; D000942:Antigens, Bacterial / Q000302:isolation & purification*; D002417:Cattle; D003168:Complement Fixation Tests / Q000379:methods; D006168:Guinea Pigs; D009161:Mycobacterium / Q000276:immunology*; D010283:Paratuberculosis / Q000175:diagnosis*; D011817:Rabbits; D012698:Serologic Tests / Q000379:methods; D012756:Sheep
chemical_list: D000942:Antigens, Bacterial