Articles, Information and News on Stem Cells
Embryonic stem cells,are derived from embryos that develop from eggs that have been fertilized in vitro—in an in vitro fertilization clinic—and then donated for research purposes with informed consent of the donors. The embryos from which human embryonic stem cells are derived are typically four or five days old and are a hollow microscopic ball [...]
An adult stem cell is an undifferentiated cell found among differentiated cells in a tissue or organ. These cells can renew themselves and can differentiate to yield the major specialized cell types of the tissue or organ. The primary roles of adult stem cells in a living organism are to maintain and repair the tissue [...]
Japanese researchers claim to have created functioning human brain tissue from stem cells, a world first that has raised new hopes for the treatment of disease. Stem cells taken from human embryos have been used to form tissues of the cerebral cortex, according to experts at the government backed research institute Riken. The tissues self-organised [...]
Stem cell research is poised to become better. A boost to stem cell research is about to arrive when President of USA, Mr Barack Obama would announce the reversal of restriction imposed by Bush government. The news has been reported by American Constitution Society Blog today. President is likely to announce this on Monday. Today [...]
Embryonic stem cells, as their name suggests, are derived from embryos. Specifically, embryonic stem cells are derived from embryos that develop from eggs that have been fertilized in vitro—in an in vitro fertilization clinic—and then donated for research purposes with informed consent of the donors. They are not derived from eggs fertilized in a woman’s [...]
The classical definition of a stem cell requires that it possess two properties Self-renewal The ability to go through numerous cycles of cell division while maintaining the undifferentiated state. Potency The capacity to differentiate into specialized cell types. This requires stem cells to be either totipotent or pluripotent – to be able to give rise [...]
To understand stem cells better, we need to understand the concept of potency. Potency defines the potential to differentiate into different cell types. of the stem cell. Totipotent or omnipotent stem cells These cells can differentiate into embryonic and extraembryonic cell types. Such cells can construct a complete, viable, organism. These cells are produced from [...]
Stem cells are special types of cells which have the characteristic ability to renew themselves through mitotic cell division [ A kind of cell division in which two similar cells are produced from one cell] and differentiating into a diverse range of specialized cell types. Stem cells are present in most multi-cellular organisms. The two [...]