Jump to navigation. An adult stem cell is thought to be an undifferentiated cell, found among differentiated cells in a tissue or organ. The adult stem cell can renew itself and can differentiate to yield some or all of the major specialized cell types of the tissue or organ.
Fortino, Jordan Greenberg and Herman S. Pluripotent Stem Cells. Stem cells are undifferentiated cells defined by their abilities to self-renew and differentiate into mature cells.
Stem cells are special human cells that have the ability to develop into many different cell types, from muscle cells to brain cells. In some cases, they also have the ability to repair damaged tissues. Researchers believe that stem cell-based therapies may one day be used to treat devastating ailments like paralysis and Alzheimer's disease.
Adult stem cells, also called somatic stem cells, are undifferentiated cells that are found in many different tissues throughout the body of nearly all organisms, including humans. Unlike embryonic stem cells, which can become any cell in the body called pluripotentadult stem cells, which have been found in a wide range of tissues including skin, heart, brain, liver, and bone marrow are usually restricted to become any type of cell in the tissue or organ that they reside called multipotent. These adult stem cells, which exist in the tissue for decades, serve to replace cells that are lost in the tissue as needed, such as the growth of new skin every day in humans. Scientists discovered adult stem cells in bone marrow more than 50 years ago.
Imagine a world in which Alzheimer's and Parkinson's disease, arthritis, blindness, and blood disorders are a thing of the past. Unique cells known as stem cells could hold the key. Like magic seeds, they respond to built-in genetic instructions to develop into bone cells, muscle cells, brain cells or any other type of cell as the growing body takes form.
David Prentice, a senior fellow with the Family Research Council, appeared before a Senate committee this fall to share some good news about stem cells. Around the world scientists are pouring into the field, because human embryonic stem cells have the power to become any cell in the body, offering the promise of dramatic scientific and medical advances. The work, however, requires destroying days-old human embryos, which critics say is tantamount to taking lives.
Adult stem cells are undifferentiated cellsfound throughout the body after development, that multiply by cell division to replenish dying cells and regenerate damaged tissues. Scientific interest in adult stem cells is centered on their ability to divide or self-renew indefinitely, and generate all the cell types of the organ from which they originate, potentially regenerating the entire organ from a few cells. They have mainly been studied in humans and model organisms such as mice and rats.
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Jump to navigation. Human embryonic and adult stem cells each have advantages and disadvantages regarding potential use for cell-based regenerative therapies. One major difference between adult and embryonic stem cells is their different abilities in the number and type of differentiated cell types they can become. Embryonic stem cells can become all cell types of the body because they are pluripotent.