Stories We Like: A Guide to the Comma
A cell, a group of cells, or an organ that produces a secretion for use in or for elimination from the body.
Any of various organs, such as lymph nodes, that resemble true glands but perform a nonsecretory function.
An organ or group of specialized cells in the body that produces and secretes a specific substance, such as a hormone. See also endocrine gland, exocrine gland.