The New Dictionary of Cultural Literacy, Third Edition. 2002.
glands
Organs or groups of cells that take substances from the blood and change them chemically so that they can be secreted later for further use by the body. There are two kinds of glands: those that secrete their substances directly into the bloodstream (endocrine glands), and those that secrete their substances through channels or ducts (such as sweat glands and salivary glands).
