I think they are taking about embryo stem cell that can save a lot of people, even you.
''The word embryo (Greek: swelling within) refers to the growing organism from the second to the eighth week of its life. During this time, it develops from a tiny cell cluster into a little growth of about 1 inch in length. As this development proceeds, the placenta, a special organ of interchange, begins to grow between the embryo and the uterus. The embryo is connected to the placenta by the umbilical cord. (Soon after the birth of the baby, its umbilical cord is still connected to the placenta which is then expelled from the uterus. For this reason, the placenta is also called the afterbirth.) The placenta acts as a filter and as a barrier. It allows the embryo (and later the fetus) to absorb food and oxygen from the woman's blood and to eliminate carbon dioxide and other waste from its own blood in return. At the same time, however, the two blood systems remain completely separate.''
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What are stem cells?
Stem cells are incredibly valuable to science and this is because they have the capacity to develop into any type of cell in the body. And therefore, they have the potential to be used for almost anything, organ transplants, a cure for Parkinson’s and much more.
When a woman’s egg is fertilized, the egg (or zygote) is totipotent — it has the capacity to turn into any type of cell in the human body, including the placenta.
Fetal stem cells, once harvested, cannot become embryos.About four days after fertilization the cells begin to specialize and form a blastocyst, which is a hollow sphere of cells with an inner cell mass in the center.
The outer layer of cells becomes the placenta and other tissues necessary for the survival of the fetus.
The inner cell mass goes on to form the fetus and eventually the baby. It is these inner cells that are so incredible because they go on to form all the tissues in the human body.
If this inner cell mass was placed in a woman’s uterus, it would not develop into a fetus1 and because of this some people claim that this cannot be considered an embryo.
The controversy comes when the cells are harvested. Harvesting can be done by:
obtaining cells from the embryos of terminated pregnancies
getting them from embryos from in vitro fertilization clinics
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