NCIt definition : A gland from which secretions reach a free surface of the body by ducts.;
Alternative definition : NCI-GLOSS: A type of gland that is found in the skin, breast, eyelid, and ear. Apocrine
glands in the breast secrete fat droplets into breast milk and those in the ear help
form earwax. Apocrine glands in the skin and eyelid are sweat glands. Most apocrine
glands in the skin are in the armpits, the groin, and the area around the nipples
of the breast. Apocrine glands in the skin are scent glands, and their secretions
usually have an odor. Another type of gland (eccrine gland or simple sweat gland)
produces most sweat.;