Embryonic stem cells are a type of cell that can be derived from human embryos very shortly after fertilization. ... Because they are pluripotent, embryonic stem cells have great potential for new regenerative clinical treatments including DNA repair and complete tissue regeneration. ... Little needs to be said about extraction of spermThe oocyte extraction is a minor surgical procedure, usually performed on an outpatient basisUsually between eight and fifteen eggs are retrieved per procedure. The extracted eggs are then fertilized by mixing them with sperm under the right laboratory condition...

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• Approx Pages: 6
• Has Bibliography
• Grade Level: Undergraduate

A stem cell is a cell from the embryo or adult that has the ability to reproduce itself for long periods by cell division (NIH, Basics II). ... The embryos are derived from eggs that have been fertilized in-vitro (NIH, Basics III). ES and some fetal cells are currently the only stem cells that are pluripotent, which means they are the only stem cells that can become any of the cells in a living organism (NIH, Progress ES-2). ... The opponents of ES cell research site inferior stem cells derived from adult sources as an alternative source for stem cell research (Do No Harm). ... Another limitat...

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• Has Bibliography
• Grade Level: Undergraduate

Cloning could make it possible for many more infertile couples to have children than ever before by increasing efficiency through nuclear transfer (Cohen 6), sperm from the father could be transferred into the mother's egg, thus creating a child. ... Embryonic Stem Cell research is taking a human cell, and basically killing it until there is almost nothing left. Then we take out the nucleus of the cell and implant it into another cell which has no DNA and we "trick" the cell into growing into whatever organ it originated from, just like it was a stem cell, the first basic cell of every o...

• Word Count: 1934
• Approx Pages: 8
• Has Bibliography
• Grade Level: High School

In humans, the method would start with a single cell - any cell may do - taken from the adult who wants to be cloned. Using an electrical jolt, scientists would fuse the genes from that cell with a specially treated donor egg cell whose own genes had been removed. That cell would be allowed to grow into an embryo in the laboratory. ... Unlike adult stem cells, embryonic stem cells can develop into any one of more than 200 tissues in the body, from insulin-producing cells that may one day treat diabetes to heart cells that may repair cardiac muscles. ... Maybe the whole cloning issue shouldn&#...

• Word Count: 1470
• Approx Pages: 6
• Grade Level: High School