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stem cells

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Stem cells may open the door to discoveries about many diseases and may allow treatments for diseases to be developed. However many ethical issues surround stem cell research which need to be addressed by scientists, governments, etc.
a. Explain why scientists would want to make induced pluripotent (iPS) stem cells instead of using embryonic stem (ES) cells that already exist. Be sure to address the following in your answer.
i. What ethical issues would be resolved by using iPS cells rather than ES cells?
ii. Explain how making iPS cells that are patient-specific stem cells could be beneficial for therapeutic use.
iii. Explain how iPS cells could be used to help screen for or develop drugs.

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