Researcher of the stem cells research right now is focuses on embryonic stem cells and adult stem cells. Embryonic stem cells are very controversial, because in order to harvest embryonic stem cells, the 4 – 6 day old embryo is destroyed. The researchers in 2005 make a decision that they would like to develop ways to remove only a single stem cell from an embryo without destroying it, but it’s not known if something like this can succeed. Right now there are stem cells that was harvested from the placenta of the newborn baby, so there’s no controversial anymore about destroying an embryo.
There’s a lot of stem cell research facts and figures that has already known from the research that has already done before, depend on the function that we have to used on the different patients that we need to cured, there’s a lot of journal which is shown us how is the research has already done.
The embryonic stem cells that are harvested from 4 – 6 days old embryo are either leftover embryos in fertility clinics or embryos created specifically for harvesting stem cells by therapeutic cloning. Until now, only south Korean scientists claim that they have successfully created human embryos by therapeutic cloning and have harvested stem cells from them.
Besides that, adult stem cells are already designated for especially a certain organ or tissue, some adult stem cell can be work on or be reprogrammed into turning into a different type of specialized cell within the tissue type, for the example, a heart stem cell can give rise to a functional heart muscle cells, but it’s still unclear whether they can give rise to all different cells types of the body. The primary role of adult stem cells is to maintain and repair the tissue in which they are found.
Scientist believe that stem cells can be used to generate cells and tissues, that could be used for cell based therapy as the need for donated organs and tissues outweighs the supply.
In many research that has already done, stem cells offer the possibility of a renewable source of replacement cells and tissues to treat diseases, including Parkinson’s and Alzheimer’s disease, spinal cord injury, stroke, burns, heart disease, diabetes, osteoarthritis, and rheumatoid arthritis. Here you get an example about ALS stem cell research trials and Pros and Cons of Stem Cell Research List.