image: This picture of a human hair follicle shows the location of the stem cells (red) and the location of the inhibitory enzyme (green). The inhibitory enzyme is in the right place to decrease hair growth. This image relates to a paper that appeared in the March 21, 2012, issue of Science Translational Medicine, published by AAAS. The paper, by L.A. Garza at University of Pennsylvania School of Medicine in Philadelphia, Pa., and colleagues was titled, "Prostaglandin D2 Inhibits Hair Growth and Is Elevated in Bald Scalp of Men with Androgenetic Alopecia." view more
Credit: Image courtesy of Dr. Louis Garza and Dr. George Cotsarelis