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.
Discuss the advantages and disadvantages of cell specialization. Cell specialization, or rather, cell differentiation, is the process by which unspecialized structures become modified and specialized for the performance of specific functions. This process usually occurs in multicellular organisms, which consist of many groups of specialized cells making up their tissues and organs.