Abstract The polyacrylamide gel electrophoretic patterns of different species strains or the same strain after various treatments of animal and avian mycoplasmas were compared.

• 对不同菌种、不同菌株或同一菌株经不同处理后的牛、猪、鸡支原体用聚丙烯酰胺凝胶电泳进行比较。