ted embryonic stem cells can proliferate indefinitely in culture, they could potentially provide an unlimited source of specific, clinically important adult cells such as bone, muscle, liver or blood cells (Para. 1).
             The main reason why embryonic cells are important is just because they can be used to treat disease. They have the ability to grow human tissue of all kinds opens the door to treating a range of cell-based diseases and to growing medically important tissues that can be used for transplantation purposes. For example, diseases like juvenile onset diabetes mellitus and Parkinson's disease occur because of defects in one of just a few cells types. Replacing faulty cells with healthy ones offers hope of lifelong treatment. Similarly, failing hearts and other organs, in theory, could be shored up by injecting healthy cells to replace damaged or diseased cells. Beside that, understanding from the first stage of development which is the embryonic cell has "potential clinical significance for preventing or treating birth defects, infertility and pregnancy loss (Para. 8)."
             From this point, some of you might ask why not derive stem cell from adults. In an internet article "Stem Cell Information" by the official National Institutes of Health tell us clearly an adult cell has many constraints. "They are already specialized, thei
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