Scientists from Yale University have discovered a few month ago the source of signals that trigger hair growth, an insight that may lead to fight baldness. The researchers identified stem cells within the skin's fatty layer and showed that molecular signals from these cells were necessary to spur hair growth in mice. "If we can get these fat cells in the skin to talk to the dormant stem cells at the base of hair follicles, we might be able to get hair to grow again," said Valerie Horsley , assistant professor of molecular, cellular and developmental biology at Yale University.
Yale researchers now captured these images of hair follicles of a mouse, with nuclei of epithelial cells stained in green and mesenchymal cells, which are active in early development, in red. Yale scientists found that mesenchymal cells were crucial to hair growth.