How were Stem Cells discovered, and how did Stem Cell Research Begin?
Stem cells were essentially discovered almost fifty years ago by a man named Leroy Stevens. While working at the Jackson Laboratory in Bar Harbor , ME he found a lab mouse with unusually enlarged scrotum. When he examined the mouse, he discovered that there had been a tumor inside of its scrotum that contained various tissues, including those of hair and teeth. He traced the origins of the tumor to a stem cell.
