Fig. 3.

Demonstration of hormone-producing cells in the normal pituitary glands, human (A–C) and rat (D). A: H&E stained anterior lobe with many round hormone-producing cells. B: The same section as A. The perivascular eosinophilic cells (in A) are positively stained for GH. C: GH cells (brown) and ACTH cells (blue) are present in close proximity to one another. D: FSH/LH cells (brown) and PRL cells (blue) are present in tight conjunction (left). These hormone-producing cells contain many dense-cored secretory granules (right).