为了抵抗这种外源性物质，免疫系统释放一种称为组胺的化学物质。
To combat the foreign substance, the immune system releases a chemical called histamine.
外源性过敏的人要尽可能少接触农药、油漆等刺激性物质。
Exogenous allergic people should avoid as much as possible pesticides, paint and other irritating substances.
目的评价外源性肺泡表面活性物质(PS)治疗婴儿体外循环后肺损伤的疗效。
Objective To evaluate the effect of exogenous pulmonary surfactant (PS) replacement therapy for infants who suffered pulmonary injury after cardiopulmonary bypass.
本实验用外源性肺表面活性物质治疗家兔肺表面活性物质缺乏模型。
The surfactant-deficiency model of rabbits were treated by exogenous surfactant in this study.
目的 研究外源性P物质（SP）对烫伤创面组织愈合及新生血管化的影响。
Objective To evaluate the effects of external substance P (SP) on scalding wound healing and neovascularization.
目的 研究外源性P物质（SP）对烫伤创面组织愈合及新生血管化的影响。
Objective To evaluate the effects of external substance P (SP) on scalding wound healing and neovascularization.
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