Embryonic Stem Cell
Embryonic stem cells (ES cells) are totipotent stem cells derived from the inner cell mass of a blastocyst, an early-stage embryo. Human embryos reach the blastocyst stage 4–5 days post fertilization, at which time they consist of 50–150 cells. Isolating the embryoblast or inner cell mass (ICM) results in destruction of the fertilized human embryo, which raises ethical issues. Those issues include whether or not a potential human life at the embryonic stage should be granted the moral status of a human being.
Human ES cells measure approximately 14μm while mouse ES cells are closer to 8μm.
Read more about Embryonic Stem Cell: Types, Research History and Developments, Reducing Donor-host Rejection, Safety: Reducing The Risk of Teratoma and Other Cancers As A Side Effect, First Clinical Trial, Potential Method For New Cell Line Derivation, Use of Human Embryonic Stem Cells As Models For Human Genetic Disorders
Other articles related to "embryonic stem cell, cell, stem cell, cells":
2004, Hwang and his team announced that they had successfully created an embryonic stem cell with the somatic cell nuclear transfer method, and published their paper in the March 12 issue of Science ... success came as a surprise because this was the first reported success in human somatic cell cloning ... Until Hwang's claim, it was generally agreed that creating a human stem cell by cloning was next to impossible due to the complexity of primates ...
... The status of the human embryo and human embryonic stem cell research is a controversial issue as, with the present state of technology, the ... Stem cell debates have motivated and reinvigorated the pro-life movement, whose members are concerned with the rights and status of the embryo as an early-aged ... They believe that embryonic stem cell research instrumentalizes and violates the sanctity of life, and some also view it as tantamount to murder ...
... done either by genetically manipulating the cells, or more recently by deriving diseased cell lines identified by prenatal genetic diagnosis (PGD) ... that already had similar disorders and diseases using cells from the disease free offspring ... Scientists have discovered a new technique for deriving human embryonic stem cell (ESC) ...
... Huckabee has said that embryonic stem cell research creates life only to end a life ... meant to loosen federal funding for embryonic stem cell research in June 2007, saying that the bill was wrong on moral grounds and based on inconclusive science ... that scientists have developed other types of stem cell research that would not require the use of a human embryo ...
... The National Academies called for the establishment of Embryonic Stem Cell Research Oversight (ESCRO) Committees in its 2005 Guidelines for Human Embryonic Stem Cell Research to manage the ethical and legal concerns ... that research, the Guidelines committee believes that all research institutions engaged in human embryonic stem cell research should create and maintain these committees at the local level ... clarified in the Amendments to the National Academies' Guidelines for Human Embryonic Stem Cell Research, released in February 2007 ...
Famous quotes containing the words cell, embryonic and/or stem:
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