1. Porcine contagious pleuropneumonia is one of the infectious respiratory tract disease that pose great threat to modern pig industry, which cause swine dead rapidly with very high rate.

2. This study confirms the sheep and goat contagious pleuropneumonia exists in Inner Mongolia, where no relevant reports come out before that.

3. Porcine contagious pleuropneumonia is one of the five primary diseases that threaten modern pig industry throughout the world.

4. Infectious pleuropneumonia of goats was reported in Africa , Middle East, eastern Europe , the former Soviet Union , the Far East and a lot of other countries.

5. Infectious Pleuropneumonia of goats is a kind of infectious disease caused by mycoplasma . The disease has a character of high fever and cough frequently in goats.

6. Actinobacillus pleuropneumoniae (APP) is the etiological agent of Porcine Contagious pleuropneumonia (PCP), a severe respiratory contagious disease effecting swine industry worldwide.

7. Acute pleuropneumonia is characterized by necrotic and hemorrhagic lung lesions with fibrinous pleuritis and high mortality.

8. Actinobacillus pleuropneumonia (APP) is an important contagious pathogen causing different age porcine infectious pleuropneumonia, and lead to severe economic loss to the swine industry.

9. The contagious porcine pleuropneumonia is a respiratory tract infection in pigs. High occurrence rate of the disease has been reported worldwide.

10. At the same time, it is very useful to prevent and control the porcine infectious pleuropneumonia.

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11. This experiment has established the theory and the practice foundation for scale pig farms of Henan Province to control contagious pleuropneumonia.

12. According to the prevailing characteristic, clinical symptom, pathology change and diagnosis of laboratory, we can diagnose it as Infectious pleuropneumonia which is caused by mycoplasma.

13. The fusion protein has been proved having immunogenicity when detected by Western blot, which demonstrates that it may be useful in the development of porcine pleuropneumonia subunit vaccine.