Abstract
Abstract
The activities of the enzymes ornithine decarboxylase and S-adenosylmethionine decarboxylase at 9:00 AM were determined in the uterus and ovary of rats as a function of the estrous cycle. The uterine levels of both enzymes were highest at proestrus and lowest at estrus. On the other hand, the ovarian levels of both enzymes were highest at estrus and lowest at proestrus. Plotting the logarithms of each of the enzyme levels in the ovary versus the corresponding logarithm of the same enzyme observed in the uterus showed a linear correlation with a negative slope both during the estrous cycle and during proestrus alone. The changes in the activities of both enzymes in the uterus could be directly correlated with the growth of this organ observed during the estrous cycle.
Get full access to this article
View all access options for this article.