You subscribe to the belief that everything must be germ free.

你们坚信任何东西都必须是无菌的。

The study involved laboratory mice. It found that adult mice raised in a germ free environment were more likely to develop allergies, asthma and other auto immune disorders

这项研究使用了实验室老鼠。研究发现，成年老鼠在无菌环境中长大更容易出现过敏、哮喘和其他自体免疫紊乱。