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.
Why Was Alcatraz Closed? Why Was Alcatraz Closed? Although it was almost forty years have passed when this prison was forced to close, this was still the subject of urban legends, giving it the reputation of being the well-known United States federal prison. Stories of brutality are still luring the place. Nevertheless, the real story needed to surface.