Sentences with phrase «only embryonic tissues»
That suggests that the cells have gone beyond pluripotency and taken on some characteristics of totipotent cells, which are even more developmentally primitive and can produce not only embryonic tissues, but also the supporting tissues such as placenta.
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The results help fill in the scientific puzzle kicked off by Dolly's cloning, which proved that mammalian egg cells were capable of dissolving the genetic roadblocks that limit the potential of most adult cells to give rise to only a single type of tissue — that of the organ from which they hail — whereas embryonic stem cells have the potential to become virtually any kind of body tissue.
In contrast to embryonic stem cells, when adult stem cells divide, their offspring are only able to develop at the same site and in certain tissue types.
Later he found that TCF - 1 is part of the larger Wnt family of signaling molecules that's important not only for immune responses, but also for embryonic development and tissue repair.
They propose that normal tissue becomes primed for cancer when oncogenes are activated and tumor suppressor genes are silenced or lost, but that cancer develops only when a cell in the tissue reverts to a more primitive, embryonic state and starts dividing.
The ability of a fertilized egg to generate both embryonic and extra-embryonic tissues is referred to as «totipotency,» an ultimate stem cell state seen only during the earliest stages of embryonic development.
Vermulst's study looked only at tissues from the heart, brain, and embryonic fibroblasts.
While much recent research has not been published in this area, there is actually a long history of studies that show: (1) there is a significant number of antigens shared between tumors and embryonic tissues (called «oncofetal antigens») and, consequently, antibodies made against tumors can also recognize embryonic tissues, and vice versa; (2) pregnancy confers some immunity against cancer (accompanied by antibody production against oncofetal antigens), not only against its occurrence but also against its growth; (3) similar to pregnancy, an immune response against cancer can be generated by vaccinating animals with embryonic tissues.
This approach to derive patient - specific Embryonic Stem cell - like cells (iPS cells) is going to open up research into the genetic causes of disease and the search for therapies not only for such diseases, but also for repairing tissues damaged in other ways.
Previous studies, however, were not able to develop tissue replacements that have hair follicles because it is only present in embryonic organogenesis.
Adult stem cells were once believed to be more limited than embryonic stem cells, only giving rise to the same type of tissue from which they originated.