Various cells. General green plant cell. Paramecium. Amoeba. Rod shaped bacterial cells. Cell specialization. A complex, multicellular organism such as yourself is composed of various specialized cells.
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General green plant cell
Rod shaped bacterial cells
Nerve cell (neuron)
Erythrocyte (red blood cell)
Macrophage (white blood cell
Muscle cell (skeletal)
Embryonic stem cell from blastocyst
Clinical Uses of Adult Stem Cells:
Clinical Uses of Embryonic Stem Cells:
Ethically obtained adult stem
cells from blood, fat cells, nerves, bone marrow are triggered to become new tissues to treat disease.
60 Minutes II: Holy GrailJune 5, 2002Stem cells are thought of as the Holy Grail of medicine. One young boy agrees with that. He made medical history because he's been cured of his life-threatening disease. The key to his cure did not come from a human embryo, where all the controversy is, but from something that is routinely tossed in the garbage - an umbilical cord. Umbilical cords were always considered medical waste. Not anymore.
June 12 2003. Keone Penn, cured of sickle-cell anemia by stem cells from umbilical cord blood, testifies before a U.S. Senate committee about successes in adult stem cell research.