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Dheeraj Ayyagari
AP Biology
Summer Assignment

Bibliographical Information: Susan Okie, Stem-Cell Research– Signposts and Roadblocks, July 7, 2005, The New England Journal of Medicine.

Introduction:
Stem-cell- an unspecialized cell that gives rise to differentiated cells
Embryo- an unborn or unhatched offspring in the process of development, especially an unborn human in the first eight weeks from conception.
In Vitro Fertilization- fertilization taking place in a test tube, culture dish, or elsewhere outside a living organism
Stem-cell research is a very controversial subject involving the use of donated human embryos to research cures for diseases such as Parkinson's disease, cancer, Alzheimer's, and various other ailments. There are many scholars who believe stem-cell research is unethical due to the use of human embryos. In the U.S.A. especially many boundaries are set limiting the research capabilities of stem-cells derived from embryos.

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Approximate Word Count: 626
Approximate Pages: 3 (250 words per double-spaced page)

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