The conventional serological tests, such as Complement Fixation Test (CFT), Indirect Hemagglntination Test (IHA ), only test the antibodies induced by the antigens in the bacterial surface and diagnose Pleuropneumonia caused by homologous serotypes.

• 传统的血清学诊断方法，如CFT、IHA等，针对的是菌体抗原诱导产生的抗体，只能对同血清型的APP做出检测。