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Adult stem cells are found all over the body after embryonic development and in different types of tissues. These stem cells are found in the brain tissue, such as bone marrow, blood vessels, skeletal muscle, skin and liver. Remain in a state of rest or scope of the past few years, until they are activated by disease or tissue injury.
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Adult stem cells can divide or self-renew indefinitely, allowing them to create a variety of cell types of the organ of origin, or even the original organ regeneration. It is generally believed that adult stem cells are limited in their ability to differentiate on the basis of their tissue. However, there is some evidence that suggests that they can differentiate to become other cell types.
Stem cells extracted from adult or embryonic tissue culture plates break. When the cells in culture makes a scientist who specializes greater control prohibited or differences. But often allows them to divide and replicate the growth of a large number of embryonic stem cells has been easier than it used to be a lot of adult stem cells. But progress is being made in both cell types.
When stem cells are allowed to share in the collection and dissemination of cultural control and healthy cells called stem cell line differences. These stem cells are handled and shared between researchers later. Once under control, stem cells can be stimulated to specialize as directed by the researchers – a process that is called the difference of the director. Embryonic stem cells can differentiate into cell types than adult stem cells.
Although there is no complete agreement among scientists to identify stem cells, most of the evidence is based on making sure that stem cells are different, and the ability to rejuvenate the body. In general, the tests are carried out in the laboratory to determine these properties.
One way to identify stem cells in the laboratory and the standard procedure for testing or bone marrow hematopoietic stem cells (HSC) transplantation by one cell to the individual without HSCs if the mother cell produces new blood and immune cells. demonstrate its power.
The Clonogenic (laboratory procedures) can also be used to test the in vitro that each cell can differentiate and renewal. The researchers also investigate the cells under a microscope to see if they are healthy and the difference, or they may check chromosomes.
To test whether the human stem cells from embryos are pluripotent allows cells natural scientists distinguish in cultured cells manage the cells to differentiate into any cell type-specific, or injected into the cell mouse durability test teratoma. formation (benign tumors containing cells differ).
<h2>Research on stem cells.</h2>
Scientists and researchers with an interest in stem cells for several reasons. Although stem cells do not serve many functions with the ability to serve any function after they were ordered to specialize. Each cell in the body, such as the first few stem cells that occur in the early stages of embryonic development. Thus, embryonic stem cells can be induced to develop into a desired cell type. The property would make stem cells that have the capability to regenerate damaged tissue in the right conditions.