Technology Ethic: Stem Cells Essay -- Research Science Biology Essays

Technology ethic bag CellsStem CellStem stalls notify be estimate of as blank slates or cells that set out yet to become specialized. They can be transformed to become cells with special functions. History/Background of Stem CellsIn the mid 1960s, R. G. Edwards and colleagues at Cambridge University began studying differentiation of rabbit embryologic cells in an artificial environment. They manipulated these embryonic cells into specific types of form such as connective tissue and muscle neurons. Richard Gardner, a graduate student of R. G. Edwards, had furthered the experimentation with mice blastocoels. As a result, human blast cysts became available since R. G. Edwards laboratory in the early 1980s.In 1986, Peter Hollands, another graduate student of Edwards, present that filch embryonic stem cells could colonize and repair damaged tissues of the haemopoietic system in adult mice. In 1998, James Thomson and colleagues at the University of Wisconsin successfully isol ated and grew human embryonic stem cells. At washbowl Hopkins University, John Gearhart successfully isolated human germ cells.From 1999 to cc0, researchers continued to manipulated cells from adult mouse tissues. Types Of Stem Cells Stem cells can be classified into tree principal(prenominal) typeso immature Stem (ES) CellsoEmbryonic Germ (EG) Cells oAdult Stem (AS) CellsEmbryonic Stem CellES cells argon undifferentiated cells derived from the inner cell mass of the blast cyst. They argon the original cells of our body tissues. ES cells have the potential to transform into 200 different specialized cell types. Human embryonic stem cells are derived from fertilized embryos which are less than a week old. In November of... ...ind. A junior woman paralyzed in a car accident flat can move her legs and toes as a result of having her own immune system cells injected into her spinal cord. Two children born without immune systems now have functioning ones because of a bone-marr ow stem cell treatment. After analyzing stem cell development, I feel that research on ES cells should be stop because of the many risks involved. Whereas the research on AS cells should carry on for it opposes no hazard to anyone.Referenceshttp//www.nih.gov/news/stemcell/primer.htm5http//www.news.wisc.edu/packages/stemcells/http//bioethics.gov/topics/stemcells_index.htmlhttp//www.cnn.com/SPECIALS/2001/stemcell/Mahendra S. Rao, Stem Cells and CNS Development (Contemporary Neuroscience)Kursad Turksen, Embryonic Stem Cells Methods and ProtocolsDaniel R. Marshak, Stem Cell Biology