Blastocyst

... into a symbiotic relationship with plant cells like mitochondria) to get energy. Then it got a bit ridiculous, with suggestions of taking a blastocyst (I think that's the one I mean, the ball of cells that makes a baby) and injecting the cell that would specialise into skin cells with choroplasts ...

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... the term somatic stem cell instead of adult stem cell. Unlike embryonic stem cells, which are defined by their origin (the inner cell mass of the blastocyst), the origin of adult stem cells in mature tissues is unknown. Research on adult stem cells has recently generated a great deal of excitement. ...

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... controversy comes from this: when does a ball of cells become 'a person'? Embryonic stem cells are those special cells that form early on in the blastocyst and have the potential to differentiate to any type of cell in the body. When you 'harvest' them, you 'kill' the rest of blastocyst. Are ...

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... till what?...we get to a eight cell stage? (or does it keep on dividing till 70 or so cell stage-as I read that somewhere)...and then its called a blastocyst right?..and those cells within are the basis of all the cells we will form..eg: heart, muscle, neurons, liver etc etc...and those 70 or so ...

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... cells etc..so is this right.. we begin as a zygote (egg+sperm)=a "cell"--then from there it divides and then again making a 7-8 cell blastocyst (i think thats what its called) and then from there each of those 7-8 cells differentiate into a specific region-eg cell 1 liver cells cell ...

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