The immune system changes, not only by the antigen and the amount of trauma, but where it is occurring.

免疫系统发生变化，不仅仅与抗原的量和创伤的程度有关，还与它出现的部位有关。

youdao

And these phenomena have important relations to the changes of the immune system after trauma.

而这些现象与创伤后免疫系统的变化有重要关系。

youdao

AIM: To observe the changes of physiological and endocrine indexes in swimming athletes and non-athletes under coldness and hotness and their influence on human immune system.

目的：观察冷、热环境下游泳运动员和非运动员生理和内分泌指标的变化，以及这些变化对人体免疫系统的影响。

youdao

They also found changes in the mix of cells within the animals' immune system itself.

ECONOMIST: Social status and health

Psychologists at University of Chicago and Ohio State University have shown that people who are socially isolated develop changes in their immune system, which leads to a condition called chronic inflammation.

BBC: Why does being lonely make you ill?