CNRI / SCIENCE PHOTO LIBRARY CNRI / SCIENCE PHOTO LIBRARY
Sebaceous gland. Light micrograph of a section through breast tissue showing a sebaceous gland. These glands produce an oily protective substance called sebum. At right is the duct (white, lined with purple cells) which connects to the surface of the skin. Sebaceous glands are found at the base of hair follicles and on sensitive skin areas: in this case, the pigmented area around the nipple (the areola).
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