The drugs work by preventing an enzyme called tyrosine kinase from launching a signaling cascade that fuels tumor cell growth.
这些药物的作用机制是阻断酪氨酸激酶启动信号级联反应，后者可以促进肿瘤细胞生长。
More problematic is the multifunctional role of thrombin, the terminal enzyme in the coagulation cascade, which is also capable of stimulating an inflammatory response.
更多需要了解的问题是有关凝血酶多重功能的作用，凝血酶是血凝级联反应的终酶，同时也具有诱发炎症反应的作用。
The first step in the RAS cascade is the secretion of the enzyme renin by renal juxtaglomerular cells in response to low blood pressure, sympathetic activation, hypovolemia, and low sodium flux.
肾素-血管紧张素系统作用机制的第一步是肾近球细胞受到低血压、交感神经兴奋、低血容量及低钠流量的刺激而分泌肾素。
The first step in the RAS cascade is the secretion of the enzyme renin by renal juxtaglomerular cells in response to low blood pressure, sympathetic activation, hypovolemia, and low sodium flux.
肾素-血管紧张素系统作用机制的第一步是肾近球细胞受到低血压、交感神经兴奋、低血容量及低钠流量的刺激而分泌肾素。
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