3161. Endocrine glands. 14 color photo micrographs. 1. Thyroid gland of mammal, t.s. 2. Parathyroid gland of mammal, t.s. 3. Thymus gland of young cat, t.s. Hassall bodies 4. Pituitary body (hypophysis), human l.s. 5. Adenohypophysis, t.s. for cell types