Can any one tell me about stem cell technology,in detail,?

Question

is stem cell technology legal, how it works

Answer 1

In the US, stem cell research is legal but there are some limits. The government won't fund research using new embryonic stem cell lines but using bone marrow or cord blood stem cells is perfectly fine. There were a few embryonic stem cell lines made legal years ago so research on them is fine but they are getting old and not working as well as they used to.
Basically, stem cell technology consists of finding the stem cells, isolating the stem cells, and then growing the stem cells. There are proteins found on the surface of all cells and different cells display different proteins so you can tell what cell is what by their cell surface proteins. So after a researcher gets his bone marrow or cord blood sample, he/she adds antibodies with little magnetic beads attached. The antibodies bind to the proteins on mostly just the stem cells. Then the mixture is filtered through a magnetic column or tube thing and all the stem cells with the magnets stick to the column while the other cells just flow through. Then the magnets are turned off and the stem cells are collected in another tube.
Next more antibodies are added with different colored markers on them. These antibodies are even more specific for the type of stem cell you're looking for. They're then run through a machine called a flow cytometer which drops individual cells in front of a laser which detects which color the cell has on it. The machine seperates the cells based on color code so you can count how many stem cells you have and see what proteins are on the surface.
Finally you add your stem cells to a growth plate with other cells or chemicals depending on what you want them to grow into. So if you wanted heart cells, you'd grow them with cardiac cells.

Answer 2

http://www.advancedcell.com/press-release/advanced-cell-technology-
It is legal