These receptors control the activity of the hypothalamo-pituitaryadrenal (HPA) axis, an endocrine system that is activated in response to stress.
这些受体可以控制下丘脑-垂体-肾上腺（HPA）轴的活性，HPA轴是一个对应激产生反应的内分泌系统。
2
Avian broilers were used as experimental objects to study the mechanism of the pituitaryadrenal axis regulating immune system when being infected with virulent infectious bursal disease virus (IBDV).
DATA SYNTHESIS: Acute stress affected the immune system mainly by inducing the changes of organism through hypothalamus-pituitary-adrenal cortex axis and sympathetic nervous system.