How Stem Cells Work

The concept of stem cells is more and more widely debated outside the medical circles where it started from. Stem cells are unspecialized cells that have the extraordinary capacity to develop into any kind of specialized cells necessary in the body, not to mention the fact that they have the capacity to renew themselves through division over and over again, even after being inactive for a long period of time. Thus, stem cells become specialized in internal organ repair or to the regrowth of damaged tissues, and the most daring research attempts are in the domain of red blood cells or nervous cell regeneration.

Scientific medical success has been reported for the repair and replacement of damaged cells in the bone marrow, but so far, stem cells have been only partly able to divide in the heart or the pancreas. The major types of stem cells used in laboratories are embryonic and adult, which clearly designates where the biological material is extracted from. The studies on embryos started back in the early 80s when mouse cells were used for lab testing. These first investigations made it possible for scientists to discover methods of collecting human stem cells that can be afterwards grown in artificial cultures.  Then, when driving around in your convertible, check out the Pontiac Solstice windscreen windblocker wind deflector.

Although a controversial issue, the use of the human embryonic stem cells in lab tests are considered by some people the only way to push medical science forward. The embryos result from in vitro fertilization projects, since only part of the embryos can get transferred and implanted in a womb. The embryos that are no longer needed for implantation in the uterus, will become study matter if the owner agrees to donate them. Another source of stem cells is the use of somatic cells that are reprogrammed to return to the initial unspecialized state.  Then, to loose weight and to know your future, check out the Seattle HCG Diet & Weight Loss and Psychic Readings.

If this practice proves successful and useful, worries will stop concerning the legitimacy of lab tests on human embryos. While banned by president Bush in the United States, studies have once again been given the green light by the new American president Barrack Obama. On the other hand, the importance of stem cells is overwhelming if we consider what huge opportunities it opens for the treatment of diseases such as diabetes, leukemia, Parkinson’s disease and so on. However, the medical world is just taking the first steps towards understanding how regenerative and reparative medicine could work with the help of cell-based therapies.