题目内容

In fact, most infections do not lead to overt clinical symptoms (disease) and are usually latent. Thus, the absence of clinical manifestations of infection has no or only limited diagnostic value, and ____________ infections are only detected if specific monitoring methods are applied.

查看答案

搜索结果不匹配？点我反馈

更多问题

All infections, apparent or inapparent, are likely to increase biological variability and hence result in a _________ in animal use.

Whenever pathogens infect laboratory animals, the immune system is activated regardless of the level of pathogenicity, and many agents also have the potential to induce _____________ of the immune system.

Housing of animals is best conducted behind __________ barriers. The term "barrier" rather describes a program aiming at the prevention of pathogen introduction than just a certain design of a facility.

A greater risk arises from animals which have been bred or housed in experimental units where less attention may be paid to ____________ hygienic measures compared with breeding units.