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breast 
Female milk-secreting glandular organ; it develops at puberty and increases in size during pregnancy.
areola
Pigmented surface surrounding the nipple.
lactiferous duct
Canal carrying milk secreted by the mammary gland to the nipple.
nipple
Cone-shaped or cylindrical erectile protuberance of the breast surrounded by the areola; the lactiferous ducts open into it.
mammary gland
Organ consisting of some 20 glands (lobes) ensuring secretion of milk.
adipose tissue
Fatty tissue surrounding the mammary gland and covering the pectoral muscles that support the breast.
