Vaccines of this type are created by inactivating a pathogen, typically using heat or chemicals such as formaldehyde or formalin.

这种类型的疫苗是活病原体而产生的， 常使用热量或甲醛或福尔马林等化物质。

Each one was drained of blood, with a shaven head, the bodies grey in colour and infused with acrid-smelling formalin to preserve them.

每个尸体都被抽干血液，头被剃光，身体呈灰色，并浸鼻的福尔马林以防腐。

As with organisms or viruses used in killed or inactivated vaccines, this can be done via treatment with a chemical such as formalin, or by using heat or other methods.

对于活或活疫苗中使用的生物体或病毒， 这可以用福尔马林等化品处理， 或加热或其他方法来完成。