There is no guarantee that forging ahead with embryonic stem cell research will produce the desired results. That, too, is a problem for some who oppose it. The utilization of embryonic stem cells, is at this point theoretical, unlike adult stem cells which have shown therapeutic results.
Although research into adult stem cells is promising, adult stem cells may not be as versatile and durable as are embryonic stem cells. Adult stem cells may not be able to be manipulated to produce all cell types, which limits how adult stem cells can be used to treat diseases.
Apr 14, 2009 · A. Existing embryonic stem cell lines. In 2001, President Bush, who holds strong pro-life views, allowed federal National Institutes of Health (NIH) funding for stem cell research using embryonic stem cell lines already in existence at the time, while prohibiting NIH funding for the derivation or use of additional embryonic stem cell lines.Cited by: 213.
Once the cell line is established, the original cells yield millions of embryonic stem cells. Embryonic stem cells that have proliferated in cell culture for six or more months without differentiating, are pluripotent, and appear genetically normal are referred to as an embryonic stem cell line. At any stage in the process, batches of cells can.