The balance between two kinds of signals ensures an effective response to foreign antigens for host protection, while avoiding inappropriate reaction to self antigens.
二者的平衡使机体在避免对自身抗原产生不适当反应的同时，又能对外来抗原显示足够强的应答能力。
2
The level of ADM in blood increasing may be the reaction of the body protection and self-balance.