Adult stem cells provide the body with a reservoir from which damaged or used up tissues can be replenished. In organs like the intestines and skin, which need constant rejuvenating, these stem cells are dividing frequently. In other body structures, such as the hair follicles, they don’t reproduce until they receive signals from their surroundings that it’s time to regenerate; this is known as a … Continue reading Study verifies how stem cells get activated to produce new hair.