Embryonic Stem Cell Retinal Implants Seem Safe, So Far
An anonymous reader writes "A biotechnology company said Monday that results from the world's first human trial using embryonic stem cells to treat eye diseases suggested that the new procedure appears to be safe four months after the cells were injected into the eyes of two blind patients. The study also describes visual improvements in patients, and experts said the findings hold promise for treating blindness in patients with currently incurable conditions like age-related macular degeneration in older patients and Stargardt's Disease, a main cause of blindness in young people."
Please, inform yourself. This sort of ignorance is embarrassing. "Harvesting fetuses" is not how we get embryonic stem cells. Excess fertilized embryos are a byproduct of in vitro fertilization. These embryos (not fetuses) would be destroyed if not donated to science. The fertilized embryos are on the order of 50-150 undifferentiated cells -- not a fetus -- in a microscope, one appears to be a spherical blob. At this point, the stem cells are "cultured" -- fed, and allowed to multiply, just like we grow bacteria or other single-celled organisms.