In these studies, GSH-depleted research animals had significant damage to the renal tubules (7), which is the main source of GSH-Px activity in the plasma (8).

• （研究7）对动物的实验发现谷胱甘肽的耗竭会严重损坏肾小管，（研究8）指出肾小管是血浆里谷胱甘肽过氧化酶活力的主要来源。