U.S. Stem Cell, Inc. is a biotechnology company, which engages in the discovery, development, and subject to regulatory approval, commercialization of autologous cell therapies for the treatment of chronic and acute heart damage. Its product, MyoCell, deals with the clinical therapy designed to populate regions of scar tissue within a patient's heart with autologous muscle cells, or cells from a patient's body, for the purpose of improving cardiac function in chronic heart failure patients. The company was founded by Howard J. Leonhardt and Robert D. Lashinski on August 12, 1999 and is headquartered in Sunrise, FL.