Characteristics of Stem Cells :: essays research papers

Stem mobile phones have two important characteristics that cite them from other types of cells. First, they are unspecialized cells that re untried themselves for long periods through cell division. The second is that under certain physiologic or experimental conditions, they bed be induced to become cells with special functions such as the whipping cells of the heart muscle or the insulin-producing cells of the pancreas.Scientists primarily work with two kinds of pedestal cells from animals and humans embryonic bowing cells and pornographic stem cells, which have divers(prenominal) functions and characteristics that will be explained in this document. Scientists discovered ways to obtain or derive stem cells from early mo usance embryos more than 20 eld ago. Many years of detailed study of the biology of mouse stem cells led to the discovery, in 1998, of how to isolate stem cells from human embryos and grow the cells in the laboratory. These are called human embryonic stem cells. The embryos used in these studies were created for antisepsis purposes through in vitro fertilization procedures and when they were no longer needed for that purpose, they were donated for look for with the informed consent of the donor.Stem cells are important for living organisms for umteen reasons. In the 3- to 5-day-old embryo, called a blastocyst, stem cells in developing tissues give wind to the multiple specialized cell types that make up the heart, lung, skin, and other tissues. In some adult tissues, such as bone marrow, muscle, and brain, discrete populations of adult stem cells generate replacements for cells that are lost through normal wear thin and tear, injury, or disease.It has been hypothesized by scientists that stem cells may, at some point in the future, become the basis for treating diseases such as Parkinsons disease, diabetes, and heart disease.Scientists indispensableness to study stem cells in the laboratory so they can read about their essentia l properties and what makes them different from specialized cell types. As scientists use up more about stem cells, it may become possible to use the cells not just in cell-based therapies, but also for screening new drugs and toxins and understanding birth defects.