Pituitary gland tissue. Light micrograph of a section through the pars distalis, the anterior part of the adenohypophysis in the pituitary gland. The adenohypophysis is a glandular lobe of the pituitary gland, an endocrine gland attached to the base of the vertebrate brain. Hormones secreted from here include adrenocorticotropic hormone (ACTH) and growth hormones. Chromophils (cells that stain easily) are seen here in red. The cytoplasm of the chromophobes (cells that do not stain easily) is unstained or only lightly stained, appearing blue. Magnification: x1250 when printed 10 centimetres wide.