It’s a very interesting question for all of the people who has curiousity in stem cell research, where do embryonic stem cells come from for research, the embryos being used in embryonick stem cell research come from and eggs that were fertized at in vitro fertilization (IVF) clinics but never implanted in a woman’s uterus. The stem cells are donated with informed consent from donors. The stem cells can grow and live in a special solutions in test tubes or petri dishes in laboratories.
Actually there’s a lot of source that can be used for the embryonic stem cells research, it can be from animal or even from human, but still respected to the law of the human being, and still based on the thing that was allowed by the law.
Using mouse embryonic stem cells for research, science and medicine
Scientist and researcher can use Mouse Embryonic Stem cells, it can be put back into a mouse blastocyst and this blastocyst can then be returned to the uterus of a female mouse to develop into a foetus. The injected Embryonic Stem cells take part in the development of the foetus and the resulting pup is born with a mixture of cells, (a) from the host blastocyst and (b) cells that came from the injected Embryonic Stem Cells. This new mouse with cells from two different origins is known as a chimera.
Human embryonic stem cells
Human embryonic stem cells has also been made by the Scientists from the inner cell masses of human embryos by employing a similar technique to that used to isolate mouse Embryonic Stem Cells. You can learn more about the human embryos used in this research and where they come from in the factsheet
Embryonic Stem Cell research has a very long debate and an ethical dilemma. It is not allowed to inject human cells back into blastocysts, but these cells can be differentiated in the laboratory to make many different specialized cell types. By using human Embryonic Stem Cells to produce specialized cells like nerve cells or heart cells in the lab, scientists can gain access to adult human cells without taking tissue from patients. They can then study these specialized adult cells in detail to see what goes wrong in certain diseases, or to study how the cells respond to potential new drugs.
Although research into adult stem cells is promising, adult stem cells may not be as good as embryonic stem cells. Adult stem cells may not be able to be manipulated to produce all cell types, which limits how adult stem cells can be used to treat diseases.