The Effect of Thyrotropin Releasing Hormone on Cell Proliferation in the Anterior Pituitary Gland of Thyroidectomized Rats

Abstract
In thyroidectomized rats, a single injection of TRH (25 µg) results in a marked increase in the number of mitoses in the anterior pituitary gland 12 h after injection, followed by a decrease in the mitotic rate 12 h later.