Any of the milk-producing apocrine glands typically occurring in pairs in female mammals and consisting of lobes containing clusters of alveoli with a system of ducts to convey the milk to an external nipple or teat.
hog:0000654
hog:0001088 mammary gland epitheliumhog:0001263 mammary gland milkBFO:0000050 part of
hog:0000726