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系统的关键成分之，它是以酶原形式PPO存在于内，具有MPO和DPO两酶活。

As an important leucoprotease,myeloperoxidase (MPO) has many effects in mediating inflammation,regulating immune response and so on,which also takes part in the genesis and development of diseases.

髓过氧化物酶作为细胞酶,具有介导炎反应、调节免疫应答等多功能,并可参与疾病的发生发展过程。