Activity of a Rat Uterus Proteinase Inhibitor During Pregnancy and Involution Its Possible Importance in Control of Proteolysis in the Myometrium
The weight of the rat uterus, like that of other mammals, increases several-fold during gestation, which in the rat lasts 21 days, and the highest rate of growth occurs in the last third of this period (Fig.1). The major portion of this increase in weight is due to the growth of the muscle layer of the uterus, the myometrium. Conversely, immediately after delivery there is a dramatic involution of the uterus, and in the rat the nonpregnant uterine weight is reached within four days (1).
KeywordsAlkaline Proteinase Acid Proteinase Alkaline Proteinase Activity Serum Inhibitor Intracellular Proteolysis
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