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Hair follicles provide the stem cells for the skin's entire epidermis

pilla," to promote hair growth. Hence, "hair grows down and then grows up," says Dr. Sun.

Human skin is continually renewed throughout life, and 90% of the body is covered by hair. However, there are no hair follicles in the palms, the soles of the feet, and the foreskin of the penis. Dr. Sun and Dr. Lavker reported nearly twenty years ago that the epithelial stem cells that supply new cells to these areas are located in an undulating, lower region of the epidermis.


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Contact: Marjorie Shaffer
Marjorie.Shaffer@med.nyu.edu
212-404-3555
New York University Medical Center and School of Medicine
16-Aug-2000


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