酶原的

Percentage of restraining platelet aggregation, prothrombin time and partial thromboplastic time were measured to compare the huoxuehuayu effects of different populations of safflower.

测定血小板聚集抑制率、凝血酶原时分凝血活酶时，比较不同栽培居群红花活血化瘀作用。

Of the system, P0 is one of the important components; it has twoactivities, MPO and DPO, and exists as proenzyme PPO in the insect.

其中，PO是PPO系统关键成分之一，它是酶原形式PPO存在于昆虫体内，具有MPODPO两种酶活性。