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Pros_And_Cons_Of_Stem_Cell_Research

2013-11-13 来源: 类别: 更多范文

Pros And Cons Of Stem Cell Research Stem cells are primitive cells found in embryos, fetuses, and adults that can grow into 210 types of cells in the body. James A. Thomson, an embryologist at the University of Wisconsin, and John D. Gearhart of the Johns Hopkins University School of Medicine announced on Thursday, November 8, 1998 that they and their colleagues had isolated the cell. Scientists have tried for years to find stem cells because of their great medical value. Diseases such as diabetes, bone marrow cancer, chronic heart disease, Parkinson's, and Alzheimer's disease are just a few that could possibly be cured with the use of stem cells. As of May 18, 2001, scientists have grown blood cells, blood vessel cells, bone cartilage, neurons, and skeletal muscle in petri dishes and continue to grow many other types of cells. This is encouraging news because a lot of diseases involve the death or dysfunction of a single type of cell. Scientists believe that the introduction of healthy cells into a patient will restore lost function. Since researchers have discovered how to isolate and culture stem cells, they have to figure out how cells, stem, research, human, cell, scientists, patient, embryos, embryo, diseases, bone, risk, marrow, make, grow, good, dna, cloning, cloned, cancer, because, ban, babies, years, university, types, transplant, tissues, though, thing, study, since, said, researchers, rejection
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