During the reperfusion period, endothelial dysfunction, activation of endogenous enzymes, leucocyte recruitment and activation all lead to the generation of oxygen -derived free radical.
再灌注期间，上皮细胞功能障碍，内源酶激活，白细胞聚集并活化，都会导致氧自由基的产生。
2
It was examined that the activation of enzymes was similar to Aloe gelatin, and it kept all the activate substances in Aloe.
经测定其酶的活性与芦荟凝胶原汁基本相似，保留了芦荟凝胶中的全部活性物质。
3
Drug metabolism enzymes (DME) play a significant role in drug detoxification and activation, which exert important effect on drug efficacy and sensitivity to toxicity.