But the cells derived from them can develop into any of the body's tissues, and biologists hope they could be used as an all-purpose repair kit. The second way to acquire stem cells are from embryonic and fetal tissue already aborted at clinics. Both ways raises large ethical issues. These experiments show the potential use of stem cell therapy and could prove to be a valuable tool for humans that suffer from debilitating brain diseases such as Alzheimer s and Parkingson s. Embryonic Stem Cell Differentiation Works Cited Beardsley, T. 1999.
Stem cells come of age.
Greenwood, D. 1998. The first derivation of human embryonic stem cells. Lysaught, M. 1999. Morrison, S., et. Prospective identification, isolation by flow cytometry, and in vivo self-renewal of multipotent mammalian neural crest stem cells.