Endocrinology 1971 is a collection of papers that discusses the endocrine polypeptides and their secreting cells. The book presents a total of 56 materials that are organized into 10 parts. The text first covers the chemical aspects of endocrinology, and then proceeds to discussing much more specialized areas. The coverage of the book includes embryological origin of endocrine cells; gastrointestinal hormones; and parathyroid hormone and calcitonin. The book will be of great use to researchers in the field of biology and medicine, particularly those who specialize in the endocrine system.