MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY
Hair transplant surgery. Image 4 of 9. Rows of hair plugs ready for transplantation. These plugs have been prepared from strips of hairy scalp that were harvested from the back of a man's head. The patient has male pattern baldness (alopecia) on the crown of his head. Each plug contains one or more hair follicles. The plugs will be implanted on the crown by a cosmetic surgery procedure known as punch grafting. This is the most common form of hair transplant. For a sequence of images of punch grafting, see M590/210 to M590/218.
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