immunological change

例句：

1. 1. The immune system plays a crucial role in protecting the body from infections.
   免疫系统在保护身体免受感染方面起着至关重要的作用。
2. 2.Researchers have discovered that certain viruses can cause immunological changes in the human body.
   研究人员发现某些病毒可以导致人体发生免疫学变化。
3. 3. Immunological changes can occur due to various factors such as stress and infection.
   由于各种因素，如压力和感染，免疫学变化可能发生。