Stems Cells And Alzeihmer's Essay

598 words - 2 pages

Can stem cells cure Alzheimer's, Blindness, Parkinson's disease, maybe even cancer? Could stem cells cure spinal paralysis or stroke? Can stem cells aide all those waiting for bone marrow transplants? The fact that stem cell researchers can be asked these questions is reason enough to pursue this area of science. Do the positives of stem cell research outweigh the negatives? Yes.Stem cells: The immature cells from which all blood cells develop. These cells may divide to form more stem cells or mature into a variety of blood cell types. They are also called "Master Cells" because they generate into other differentiated cell types. Each tissue within the body contains a unique type of stem cells that renew and replace that tissue like nerve, brain, cartilage, blood and when needed due to damage or wear and tear. Stem cells of the blood, hematopoietic stem cells, generate all other blood cells in the human body, including red blood cells, platelets, and white blood cells. Sources of hematopoietic stem cells include umbilical cord blood, bone marrow, peripheral blood and embryos. Stem cells divide and when a stem cell divides, each new cell has the potential to either remain a stem cell or become another type of cell with a more specialized function, such as a muscle cell, a red blood cell, or a brain cell. If stem cells could be isolated many diseases could be fought with greater success and it could potentially change the entire spectrum of life and health as we know it today.November 1998, James Thomson successfully isolated stem cells from human embryos and aborted fetuses. A new world in scientific research has been opened. A fierce debate of ethics also begins.The medical value of stem cells is their...

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