Scientists Grow Human Hair on Mouse But tests on humans are probably a decade away By Dustin Lushing, Newser Staff Posted Apr 18, 2012 5:05 PM CDT 14 comments Comments A stock image of a mouse. (Shutterstock) (Newser) – Bald people may have new hope for getting back those flowing locks. Japanese scientists have regenerated hair growth on bald mice, reports the Wall Street Journal. The researchers injected the follicle cells of a hairy mouse into the follicles of a bald mouse, and within three weeks, 74% of the transferred follicles sprouted hair. They also implanted a human hair follicle, which successfully grew human hair. The scientists were able to adjust the density and color of the hair by using different types of cells. The technique will take roughly a decade before it can be tested on human subjects, and it will likely be used solely to help with hair loss from injury or disease rather than general baldness, as only small amounts of hair can be cultivated. It's another example of how mice might turn out to be bald men's best friends.