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。
It is suggested that syncopic reaction could be reduced by improving the working condition for blood donation to prevent mental stress, avoiding empty stomach, fatigue, etc.
因此，改善采血环境，消除献血者心理紧张以及避免空腹、劳累等是可以防止和减少献血反应的。
Correctly recognize Chinese drugs' toxic and side effects and bad reaction for good result and avoiding harm; fully exert TCM's preventing and treating disease with less harm;
正确认识中药的毒副作用及不良反应，趋利避害，在充分发挥中药防病治病的作用下减少伤害。
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