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    The cells can then be put back into the patient to help control or cure his or her disease. Unlike embryonic cells, which are harvested from fertilized eggs, adult stem cells exist in mature tissue throughout the body. Gary Smith, director of the MStem Cell Laboratories, removing a rack containing vials that hold frozen human embryos donated to the university. They can serve as a built-in repair system for the human body, replenishing other cells as long as a person is still alive. Many scientists believe that adult stem cells can play a vital role in advancing treatment and cures for many diseases.
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    Introduction

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    The primary role of adult stem cells in humans is to maintain and repair the tissue in which they are found. Stem cells are very flexible cells, sometimes considered immature, that have not developed to a final specialized cell type like skin, liver, heart, etc. Since they have not yet specialized, stem cells can respond to different signals and needs in the body by becoming any of the various cell types needed, e. In that sense they are a bit like a maintenance crew that keeps repairing and replacing damaged or worn out cells in the body. Microscopic in size, stem cells are big news in medical and science circles because they can be used to replace or even heal damaged tissues and cells in the body.
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    Learn something new every day More Info There are at least two major types of stem cells, called embryonic and adult stem cells. Unlike embryonic cells, which are harvested from fertilized eggs, adult stem cells exist in mature tissue throughout the body. Many researchers consider adult stem cells from humans to be vital to the improvement of medical technology, yet a portion of the public feels it is an ethical violation to experiment on human tissue. Adult stem cells are found in many areas of the body, including the brain , heart, stomach, skin, bone marrow , and muscles.
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    This microscope image x magnification shows the 5-day-old embryo—also known as a blastocyst—that U-M Consortium for Stem Cell Therapies researchers used to create Michigan's first human embryonic stem cell line, UM Image courtesy of Gary Smith. This microscope image x magnification shows an oval cluster of roughly 1, human embryonic stem cells growing together as a colony. Gary Smith, director of the MStem Cell Laboratories, removing a rack containing vials that hold frozen human embryos donated to the university. Magnified image of a human blastocyst. Green area is the inner cell mass, the cluster of cells along the inner wall of the blastocyst that provide the embryonic stem cells. The red cells are trophectoderm.
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    Stem Cell Research

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