can stem cell technology push up the limit of cell division? if not, Then stem cell technology only can be used to repair human body?
Stem cell techology cannot push up the limit of cell division. Embryonic stem cell technology has barely been used for anything useful. Adult stem cell technology has been used to cure.
it could be used, but ethical concerns have slowed research in that area, the preferred area of research is Adult stem cells as it doesn't carry the same ethical concerns if you had a machine that could make embroic stem cells from your existing cells, you could inject them into the blood stream and they would go where they were needed, thus extending life, were not there yet, at least not where people could afford it .
You obviously haven't read much on the issue. The problem with the embryonic stem cells is twofold: 1st, the cancer risk from the embryonic stem cells is very high, 2nd, there rejection issues. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3070641/ http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2598267/
We can thank right wing foot dragging on this issue or this technology would be significantly more developed.
Doubtful. The technology was never banned in this country (like it was in Germany), it was simply not funded by the government. If private industry thought it would be worthwhile they would have sponsored research in it. They looked at it, and decided it wasn't worth the money. They were right. The disadvantages are insurmountable, as they are intertwined with the basic principles involved--i.e. the tumor risk and the rejection problems. The tumor risk is probably there for all stem cells, but at least adult stem cells derived from the same patient don't have rejection issues.
by embryonic I mean a stem cell that is reset to be nothing.... from the patient own cells, IE, compatible, wont be rejected this could be from cloned, or reset adult cells.... .
Please read up on the subject before blathering on. A stem cell from the patient's own cells is an adult stem cell. Embryonic means just that--from an embryo, not from an adult.
