amniotic stem cells definition
A type of undifferentiated stem cell found in embryos. Use of this type of stem cell has significantly decreased in recent years due to the discovery of induced pluripotent stem cells. Engineered stem cell. A stem cell that has been modified in the laboratory to give it specific properties. If you isolate cells from structural tissue, you should apply the definition of minimal manipulation for structural tissue. Example 10-1: Original relevant characteristics of adipose tissue, a structural tissue, to pad and cushion against shocks generally include its bulk and lipid storage capacity. Amniotic Membrane Structure and Function. Human amniotic membrane forms the lining of the fetal environment during gestation, separating the developing fetus from the mother in utero. A type of stem cell from adult bone marrow or adipose tissue that can differentiate into bone, cartilage, fat and possibly other cells. Multipotency. The ability of a stem cell to differentiate into more than one — but not every — type of cell in the body. Compare with pluripotency and totipotency. Cellular material includes the epithelial lining of the amnion facing the infant, but also pluripotential stem cells important in regenerating new cellular materials within the membrane lining. Epithelial stem cells, in particular, have also been isolated from the epithelial layer of the amniotic membranes. Fibroblasts are also present and provide lining and strengthening of tissues. The epithelial cells are also biologically active in the healing process through various receptors on the cell surface. Transplanting organs, tissues or cells from one person to another. Compare with autologous transplantation. Amniotic fluid stem cell. A type of cell derived from amniotic fluid, which is the liquid that surrounds a developing fetus in the amniotic sac. The amniotic membrane is also home to a variety of unique molecules with specific functions. Defensins, for example, are a group of molecules that assist in conferring antibacterial properties to the material and are known to increase near the time of delivery. A type of stem cell found in organs of the body that can be used for regenerative interventions. Center for Regenerative Medicine protocols have been developed to generate adult stem cell-derived bone-like, nerve-like and heart-like tissues. Allogeneic transplantation (allotransplantation). Used as a wound allograft, the entire membrane is used, placed with the chorion side down against the wound and the epithelial surface upright. [ CLOSE WINDOW ]. Figure 2. H/E Stain of human amniotic membrane tissue. Note the epithelial cell later visible through the presence of the epithelial cells and their nuclei. Submit one set of either electronic or written comments on this draft guidance by the date provided in the Federal Register notice announcing the availability of the draft guidance. Submit electronic comments to http://www.regulations.gov.
A type of cell derived from amniotic fluid, which is the liquid that surrounds a developing fetus in the amniotic sac.