Stem Cells Essay

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Stem cells are blank cells that are unspecialized that can become many or any different types of cell of the body. Stem cells can be very important because they have the ability to become a different type of cell. If these stem cells are placed in an organ of a body that has been damaged, it may be able to specialize into that particular type of cell and “repair” that organ and replenish the organ with healthy cells. There are two major types of stem cells and they are embryonic stem cells and adult stem cells. Embryonic stem cells are cultivated from blastocysts that are left behind from in vitro fertilization. Adult stem cells can be found in the blood, bone marrow, liver, kidney, cornea, dental pulp, umbilical cord, brain, skin, muscle, and salivary gland. They are cultivated from a fully grown human, so there are only a finite number of specialized cells adult stem cells can become. The controversy surrounding stem cells involves only embryonic stem cells. The embryonic stem cells are cultivated from the inner cell mass of blastocysts. A fertilized egg becomes a blastocyst in about five days. Many groups of people find this unethical because to retrieve the stem cells, a living being is killed. Scientists argue that the blastocyst is not yet a living being. (1) In an in vitro fertilization clinic, embryos are donated to research with informed consent of the donors. The blastocyst is made up of three different structures named the trophoblast, blastocoels, and inner cell mass. The trophoblast is a layer of cells surrounding the blastocyst. The blastocoel is a hollow cavity inside the blastocyst. At one end of the blastocoel is the inner cell mass, where stem cells are found. The inner cell mass containing the stem cells is removed from the blastocyst and transferred to a culture dish. The cells are developed in the culture dish along with a nutrient broth for

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