First off, there is more than one kind of stem cell. Human stem cells are unique because they have the potential to become a specialized cell and can divide and renew themselves, according to the National Institutes of Health.
Doing Time as a Federal Prison: 1934-63. In 1933, the Army relinquished Alcatraz to the U.S. Justice Department, which wanted a federal prison that could house a criminal population too difficult or dangerous to be handled by other U.S. penitentiaries.
Al Capone is one of the most famous prisoners of Alcatraz. Capone was on the first trainload of prisoners to the new federal prison located on Alcatraz Island. In 1934, Capone became known as prisoner number 85. In true Capone style, he immediately tried to manipulate the system to get special treatment here.