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( Stem cell) Stem cells are cells found in most, if not all, multi-cellular organisms. They are characterized by the ability to renew themselves through mitotic cell division and differentiating into a diverse range of specialized cell types. Research in the stem cell field grew out of findings by Canadian scientists Ernest A. McCulloch and James E. Till in the 1960s.^[1][2] The two broad types of mammalian stem cells are embryonic stem cells that are found in blastocysts, and adult stem cells that are found in adult tissues. In a developing embryo, stem cells can differentiate into all of the specialized embryonic tissues. In adult organisms, stem cells and progenitor cells act as a repair system for the body, replenishing specialized cells, but also maintain the normal turnover of regenerative organs, such as blood, skin or intestinal tissues.

Stem cells can now be grown and transformed into specialized cells with characteristics consistent with cells of various tissues such as muscles or nerves through cell culture. Highly plastic adult stem cells from a variety of sources, including umbilical cord blood and bone marrow, are routinely used in medical therapies. Embryonic cell lines and autologous embryonic stem cells generated through therapeutic cloning have also been proposed as promising candidates for future therapies. ^[3]

The classical definition of a stem cell requires that it possess two properties

The practical definition of a stem cell is the functional definition - the ability to regenerate tissue over a lifetime. For example, the gold standard test for a bone marrow or hematopoietic stem cell (HSC) is the ability to transplant one cell and save an individual without HSCs. In this case, a stem cell must be able to produce new blood cells and immune cells over a long term, demonstrating potency. It should also be possible to isolate stem cells from the transplanted individual, which can themselves be transplanted into another individual without HSCs, demonstrating that the stem cell was able to self-renew.

Stem cell Subcategories Stem cell Articles The Role of Stem Cells in Exercise and Recovery by Barb Luick Ask any physician and they will tell you that exercise is essential to optimal health. What many physicians won’t mention though - especially to non-athletes - is that the key to sustaining optimal health is to balance the breakdown of the body with ... REGENERATIVE MEDICINE - Researchers Pave The Way For Stem Cell Therapy and Cardiac Disease. by Regenerative Medicine With stem cell treatment Mexico it has been found that Stem cells derived from umbilical cord blood are more potent and effective to treat heart disease than autologous adult stem cells. Patients who have severe cardiac disease with a history of coro... Can We Enhance Our Stem Cells? by betty lynch A breakthrough, natural botanical extract that supports wellness by helping your body maintain healthy stem cell physiology. It is the very first product on the market from the latest phytoceutical product category called “stem cell enhancers”. Wha... Stem Cell Treatment for Heart Disease Helps Dallas Cowboy by Jerry Steele Dallas native Joe Woolfolk was suffering from congestive heart failure. Before, Mr. Woolfolk had 2 myocardial infarctions, which had damaged more than 33% of his heart. With an ejection fraction (a measure of the heart’s pumping ability) of 20%, Joe'... Cellulitis Skin Infection Causes, Symptoms and Treatment by Francis Adam Definition: Cellulitis is an acute inflammation of the connective tissue of the skin, caused by infection with staphylococcus, streptococcus or other bacteria Clinical Presentation Cellulitis occurs as a tender, edematous, br... Fatburner System by Sharon van der Merwe THE FAT BURNER'S DIETARY SYSTEM. Most people who try to loose weight FAIL. How many folk do you know that have tried a diet and have manage to loose some kilos, only to crack and fall back on their old eating habits, a... tem Cells by subhash kumar Stem cells are primal cells common to all multi-cellular organisms that retain the ability to renew themselves through cell division and can differentiate into a wide range of specialized cell types. Research in the human stem cell field grew out of ... Do You Believe That A Good Tasty Lunch Can Make You Happy? by Yulia Berry While you are dieting, your brain cells try to save energy and you unintentionally want to avoid any stress, including strong positive emotions, like joy, happiness, ecstasy, etc. If your brain cells do not get optimal nutrition, they grow old and do... CHA Medical Gruop(representative: Kwang Yul Cha) will bring hope to incurable disease treatment. by Kwang Yul Cha -Built 'CHA Group Stem Cell Institute' constitute of Nationally and Internationally well-known 180 scholars. -Planning to build 'CHA Institute' in 'Pangyo Techno Valley' in 2010. -Lead the Cell Therapy Product Market using Stem cell, produce patien... Natural Stem Cell Therapy by Dr. David Orman Natural Stem Cell Research By Dr. David Orman www.hghplus.net hghplus@yahoo.com Mention the phrase "Stem Cell Research" and one will here a wide range of passionate reactions. The man who started all of this was Dr. Michael West. In la...