胚胎幹細胞embryonic stem cell的資料和評論

I think stem in greek (or latin) means origin, in plant, the flowers are originated from the "stem", in animal, stem cell mean the original cells! i.e. everything derive from this "stem"!

When fertilization take place a sperm and ovum join together and form a new cell. This is call a zygotes, or stem cell, or embryonic stem cell.

These cell will divide and eventually form the corresponding full grown animal.

when we are dealing with human ESC, each of these ESC could develop to human.

From this point most of what I said are speculation...

these ESC will divided into a cluster of cell and eventually specialize differentiation will take place where specific organ will develop.

e.g some of ESC will develop to hematopoietic stem cell, when it will further develops our blood/circulation system, the immune system and so on.

Also, ESC will develop to mesenchymal stem cell and it will further develop to form the structure and organ of the body.

As you can see, each ESC have the potential to develop into a human being, when we are dealing with ESC, it mean we are dealing with a potential human being, and here is the moral issue, that we have no right to play/conduct experiment upon human being, and it is forbidden to do so.







2010-05-27 18:42:44 補充：
well, english is a lot easier for me.

this is my knowledge, I get bit and piece from here and there, wiki is a good source, but usually it is long and windy.

2010-05-27 18:43:26 補充：
here is a good source for news in stem cell, I remember they have some link regarding ESC a few days ago, I think they have an internal search, may be you can start from there.

http://www.hongkongstemcell.com/c/e_marketupdate.php

What kind of 評論和爭論? there are too many regarding stem cell..