??? ? ??? ?? ?????, ? ??? ?????? ?? ???? ????? ????.Embryonic stem cells (usually known as ES cells) are stem cells which can be derived with the interior cell mass of the mammalian embryo at a very early stage of development, when it really is made up of a hollow sphere of dividing cells (a blastocyst).Neural stem cells take place inside the spina

?? ??? ?? - ????? ???? ?? ?? ????? ?????.???: ??? ???? ????, ?? ????? ???? ???? ????. ???? ??? ??? ?? ??? ??? ????.??? ???? ?? ? ?? ??? ?? ??? ?? ?? ?? ???? ???? ????? ?? ??? ?????? ??? ??? ? ????.??? ??? ?? ??? ?? ?? ?? ???? ???. ???? ??? ???? ???? ??? ??? ??? ? ??? ???. ??, ??? ???? ???? ??? ???? ?? ???? ????.???????? ???? ??? ???? ???? ??? ??? ?

????? ????? ???,???,???? ???? ??? ??? ?? ??? ?? ???.???? ??? ?? ???? ?? ?? ???? ??? ?? ??? ?? ??? ?????. ? ?? ???? ?????? ???, ????? ??? ??? ?? ???? ??? ?? ? ?? ????.????? ??? ??? ?? ??? ??? ??? '???'?? ?????.?? ????? ?? ???? ????? ?????? ????? ??? ?? ????? ??? ??? ????? ?? ? ?? ???? ??? ???? ???.??, ?? ?? ?? ???, ??? ??? ???? ?? ???? ??? ???.??? ?

????? ??? ??? ?? ?? ????? ?????, ?? ???? ??? ??? ??? ?????. ??? ??? ??? ??, ??? ?????? ??? ??? ????, ??? ? ??? ?????????? ??? ??? ? ??, ???? ?? ??? ???? ??? ? ????.???? ??? ??? ???? ????? ????. ?? ??? ??,??,??,?? ? ????? ??? ??? ????? ???? ??? ?? ??? ? ? ???? ?????? ??????.?? ??? ????: ??? ??? ?? ??? ??? ???, ????? ?? ?? ???? ??? ? ????. ???? ????

????? ?? ?? ?? ??? ??? ???? , ?? ??? ? ??? ??? ??? ??? ????? ??? ??? ???? ?? ?? ??? ??? ??? ?? ?? ? ? ?? ??? , ????? ????? ??? ?? ???? ???? ??? ??? ???? ??? ????? ????.????? ??? ????? ?? ??? ????? ???? ???? ??? ? ?? ?? ??? ??? ???? ??? ?? ???? ??? ? ?? ?? ??? ?? ??? ???? ?????????. ?? ??? ??? ????????. ?????.?? ???? ??? ???? ? ?? ?? ? ??? ???? ?? ?