An emulsifying agent produced in the LIVER and secreted into the DUODENUM. Its composition includes BILE ACIDS AND SALTS; CHOLESTEROL; and ELECTROLYTES. It aids DIGESTION of fats in the duodenum.

The yellow or brown waxy secretions produced by vestigial apocrine sweat glands in the external ear canal.

The thin, yellow, serous fluid secreted by the mammary glands during pregnancy and immediately postpartum before lactation begins. It consists of immunologically active substances, white blood cells, water, protein, fat, and carbohydrates.

Hydrochloric acid present in GASTRIC JUICE.

The fluid secreted by the lacrimal glands. This fluid moistens the CONJUNCTIVA and CORNEA.

An unctuous substance composed of sebum and desquamated epithelial cells, which covers the skin of the fetus.