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Definition of Mammary gland

Mammary gland: One of the two half-moon-shaped glands on either side of the adult female chest, which with fatty tissue and the nipple make up the breast. Within each mammary gland is a network of sacs that produce milk during lactation and send it to the nipple via a system of ducts.

Undeveloped mammary glands are present in female children and in males.

See also Breast, Lactation.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=4267
Last Editorial Review: 8/28/2013

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