... made an exact copy of an adult sheep in a process called cloning. What the researchers actually did: they took an unfertilized egg cell from a female sheep and removed the entire DNA (genetic information) from the nucleus that is needed to produce an embryo. Next, they took a cell- that carried the ... clones-- of animals by dividing embryos (Science). But this was the first time anybody had made adult mammal genes behave like genes in a fertilized egg. Dr. Ian Wilmut, regarding the purpose of cloning of the sheep, said he was just trying to modify sheep to produce valuable drugs in ......

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... made an exact copy of an adult sheep in a process called cloning. What the researchers actually did: they took an unfertilized egg cell from a female sheep and removed the entire DNA (genetic information) from the nucleus that is needed to produce an embryo. Next, they took a cell- that carried the ... clones-- of animals by dividing embryos (Science). But this was the first time anybody had made adult mammal genes behave like genes in a fertilized egg. Dr. Ian Wilmut, regarding the purpose of cloning of the sheep, said he was just trying to modify sheep to produce valuable drugs in ......

• Word Count: 2707
• Approx Pages: 11

... more advantages than downfalls. With recent advancements in the mapping of the human genome, it will soon be possible to identify particular strings of DNA which may cause diseases like cancer or amyotrophic lateral sclerosis. Commonly known as ALS or Lou Gehrig's Disease, amyotrophic lateral sclerosis is a neurodegenerative ... be obtained from several sources. One of these sources is the embryonic stem cell, which is a cell harvested from a non-implanted, frozen, fertilized egg. Obtaining stem cells from such an undifferentiated source may be more advantageous than obtaining one from a...

• Word Count: 2597
• Approx Pages: 10
• Has Bibliography
• Grade Level: Undergraduate

... President on Stem Cell Research". August 9, 2001. . Easton, Megan. "A Canadian Perspective on Stem Cell Research". August 23 . Cold Spring Harbor Laboratory Staff. "How Embryonic Stem Cell Lines are Made". Dolan DNA Learning Center. September 2003 Grove, Cluzko. "In Lung Research, Embryonic Stem Cells Again Play Catch-Up with Adult Stem Cells" September 12, 2003. http://www.stemcellresearch.org/facts/lungresearch.htm ... ...

• Word Count: 2589
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• Grade Level: High School

... be either a result of necrosis or apoptosis. Necrosis is the disruption and disposal of a cell and its organelles by phagocytosis through an inflammatory response (Schapira 1999). Apoptosis is characterized by DNA fragmentation, cell shrinkage, and a lack of inflammatory response. Also, mitochondrion is thought to have a very significant role in the events that lead to apoptotic cell death (Zamzami et al. 1997 ... ...

• Word Count: 4190
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• Has Bibliography
• Grade Level: Undergraduate

... are non-differentiated cells and luckily have the ability to self-renew. Differentiation affects a cell's size, shape, membrane potential, and responses to specific signals. Tracing back to the foundation, a human egg is fertilized with a sperm cell and the zygote begins to multiply into identical cells. When about 100 cells have been produced, they take the shape of a hollow sphere called a blastocyst ... ...

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• Grade Level: Undergraduate

... embryo results in embryonic death. These individuals consider stem cell research to be murder, because they believe that human life begins at the exact moment when the sperm meets the egg. Nevertheless, the benefits of stem cell research outweigh the alleged immorality of the process; stem cell technology has mended bodies and will save innumerable lives. There are three kinds of ... ...

• Word Count: 2913
• Approx Pages: 12
• Grade Level: Undergraduate

... of stem cell research to move on the anti-cloning laws. Stem cell researchers in Los Angeles are said to be working on taking stem cells from parthenogenesis, which are egg cells whose chromosomes are from the mother and in normal embryonic development. February 2002 the National Institute of Health announced it's first research grant which was to be given to ... ...

• Word Count: 2542
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• Grade Level: Undergraduate

... . Human embryonic stem cells have shown the most potential in the labs on their own. Embryonic stem cells "come from the inner cell mass of a blastocyst, the term for a fertilized egg four days after conception" (Reeves). When a couple goes to a clinic to have in vitro fertilization done to try to have a baby, the excess cells are usually frozen for future use ... ...

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