Estrous cycle-controlled cell proliferation in the adrenal cortex of female rats

In a total of 120 rats the number of 3H-Tdr-labelled nuclei of the adrenocortex was counted during various phases of the estrous cycle. In two separate experiments cyclic variations in the number of DNA synthesizing cells were found. The labelling index of the zona glomerulosa showed a significant maximum in proestrus whereas in zona fasciculata a minimum… CONTINUE READING