 |
| |||
| 原发病菌指感染健康动物引起疾病的病菌，与由于病畜抵抗力减弱继而感染的继发人侵病菌 (secondary invader)相对而言 | |||
The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error
| Get short URL | Language Selection Tips