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Anatomy Atlases: Atlas of Microscopic Anatomy: Section 1 - Cells Atlas of Microscopic Anatomy: Section 13 - Female Reproductive System

Plate 13.254 Mammary Gland: Lactating

Ronald A. Bergman, Ph.D., Adel K. Afifi, M.D., Paul M. Heidger, Jr., Ph.D.
Peer Review Status: Externally Peer Reviewed


Plate 13.254 Mammary Gland: Lactating

Monkey, 10% formalin, H. & E., 36 x.


A low power view of a section of actively lactating breast post parturn. The surface of the mammary gland is covered by a thin epithelium. The underlying dermis contains the follicles of fine surface hairs; the areola (not shown) is devoid of hairs. Alveoli are dilated and sacculated and contain a light- staining secretion product. With the degree of dilation shown by the secretory units, the smaller ducts are not distinguishable from the secretory units. Profiles of higher-order ducts are seen in the lower portion of the field.

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