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by Yael Li-Ron A stem cell is a type of cell that may develop into any type of organ or tissue with the right kind of scientific prodding. Stem cells can become bones, muscles, even specific organs. Researchers are talking about regenerating damaged tissues (such as nerves and severed spinal cords), finding a cure for Alzheimer's, multiple sclerosis and Parkinson's disease, and performing other feats that now seem impossible. Bone marrow is one source of stem cells, and scientists have recently discovered that body fat obtained in liposuction procedures contains useful stem cells. Researchers also recently discovered that stem cells from bone marrow can become liver cells, an encouraging development for people seeking treatments for liver diseases. Cloning doesn't only mean creating new people or animals. A more realistic (and less controversial) type of cloning entails the creation of "spare parts"–organs that won't be rejected by the body's immune system. Scientists can already bioengineer skin, bones, cartilage and some vital organs, such as the pancreas and the kidney, by culturing a patient's tissues. There's even a recorded case of a thumb grown in a lab. What else lies in the future? We can only guess.
Formerly a mainland hypochondriac, writer Yael Li-Ron (www.tipx.com) enjoys great health since she moved to Hawaii. Her interest in medical research, and
genetic engineering in particular, started a few years ago when a close friend was diagnosed with multiple sclerosis.
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