Stem cell solution was brought to lime light when a hospital in Bangkok when stem cell was used by the pediatrician to save the life of a 2-year old baby. The baby was suffering from a potentially fatal disorder of the immune system known as bubble-boy disease and lived because of a transplant of umbilical cord blood. Such blood is a rich source of immature cells that can develop into a wide range of different blood cells which can be used to replace diseased ones.
Researchers in Massachusetts had managed to transform regular skin cells into the equivalent of embryonic stem cells in mice. Their work points to a way to produce cells with the qualities scientists value about embryonic stem cells, but without the need to create, harm, or destroy human embryos, and therefore without ethical or political controversy.
This announcement came on the eve of a House vote to allow federally funded scientists to study cells from leftover frozen embryos at fertility clinics. And this disharmonic convergence put the politicians into orbit.
The term stem cell actually refers to several types of cells, all of which are special because they can grow and divide into multiple types of cells. Stem cells that are derived from embryos are the most potent of all stem cells because they are able to mature into any cell type in the body. There are stem cells in a few places in the adult body, too, but these are more restricted in their possibilities--for example, stem cells in bone marrow can mature into any type of blood cell, including immune cells, but they could never become a nerve or muscle cell.
Adult stem cells from bone marrow have been used medically for years to help regenerate the immune system, according to Arnold Kriegstein, a stem cell expert at the University of CaliforniaSan Francisco. He added that stem cells derived from fetal tissue (as opposed to developing embryos) are currently being tested as a cure for a rare metabolicPage: 1 2 Related medicine news :1
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