激素分泌分类如下：
粉红色嗜酸性细胞分泌生长素( GH )和催乳素( PRL )；
暗紫色的嗜碱性细胞分泌促肾上腺皮质激素( ACTH )，促甲状腺激素（TSH）和卵泡刺激素（FSH）和黄体生成素(LH)。
淡染的嫌色细胞几乎没有胞质颗粒，但也有分泌活动。
The normal microscopic appearance of the adenohypophysis is shown here. The adenohypophysis contains three major cell types: acidophils, basophils, and chromophobes. The staining is variable, and to properly identify specific hormone secretion, immunohistochemical staining is necessary. A simplistic classification is as follows:
The pink acidophils secrete growth hormone (GH) and prolactin (PRL)
The dark purple basophils secrete corticotrophin (ACTH), thyroid stimulating hormone (TSH), and gonadotrophins follicle stimulating hormone-luteinizing hormone (FSH and LH)
The pale staining chromophobes have few cytoplasmic granules, but may have secretory activity.