Vladimir Lenin led the Bolshevik Revolution, helped create the Soviet Union and launched the communist era in Russia. Learn more at Biography.com. Vladimir Lenin was founder of the Russian Communist Party, leader of the Bolshevik Revolution and architect and first head of the Soviet state.
The disadvantages come entirely from the source of stem cells. For embryonic stem cells, a human blastula (the collection of cells that will eventually become a fetus) must be sacrificed. This brings forth an image of sacrificing babies for science, and needless to say, many folks have a problem with that.
STEM CELLS DIFFER FROM OTHER KINDS OF CELL IN THE BODY BECAUSE OF TWO CHARACTERISTICS: 1. STEM CELLS ARE UNSPECIALIZED CELLS THAT ARE ABLE TO RENEW THEMSELVES FOR LONG PERIODS OF TIME BY CELL DIVISION. THIS IS IN CONTRAST TO OTHER TYPES OF CELLS THAT HAVE A SPECIALIZED ROLE AND DIE AFTER A DETERMINED LIFESPAN. 2.