Blastocyst

Dear everyone: As l read from the web, it says that a human sperm can live in open air at about four hours. But how about embryo/zygote/blastocyst? Can they live outside the body, in open air for a while of time???

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... 2-cell stage, is not known to me. (Anybody else know about this on the forum?) It would be interesting though to see if there is a cell within the blastocyst (ICM - InnerCellMass - for humans) that contains all the original paternal and maternal genome. Why would you pick the original cell to become ...

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... yolk that supplies the nutrients to the fertilized egg. But actually nutrients for the zygote is all contained in the fertilized egg cell till the blastocyst stage (the cell is just being divided into individual cells - DNA duplication and cytokinesis). Upon gastrulation, then development needs ...

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... used to treat disease in present? A.Bone Marrow Stem Cell B.Mesenchymal Stem Cell C.Pherripheral blood stem cell D.Umbilical cord blood stm cell E.Blastocyst Embryotic stem cell May be D 4.Which disease shoukd not be treated by cell-based therapy? A.HIV B.burns C.Diabetes Millitus D.Spinal cord ...

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... used to treat disease in present? A.Bone Marrow Stem Cell B.Mesenchymal Stem Cell C.Pherripheral blood stem cell D.Umbilical cord blood stm cell E.Blastocyst Embryotic stem cell 4.Which disease shoukd not be treated by cell-based therapy? A.HIV B.burns C.Diabetes Millitus D.Spinal cord injury E.Parkinson's ...

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