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。
Results reducing reaction of the drug, avoiding delay the condition of a patient, reducing occurrence of the complication.
结果：减少了用药的反应，避免延误病情，减少了并发症的发生。
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。
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