Free Republic
Browse · Search
News/Activism
Topics · Post Article

To: gridlock; CDHart
CDHart -- What is a blastocyst?

Gridlock -- It is a certain stage in human development, kind of like a four-and-a-half year-old.

A blastocyst is a preimplantation embryo of about 150 cells produced by cell division following fertilization. The blastocyst is a sphere made up of an outer layer of cells (the trophoblast), a fluid-filled cavity (the blastocoel), and a cluster of cells on the interior (the inner cell mass). The uterus accepts a blastocyst for implantation for a limited period of time (the receptive phase) and then becomes refractory. And unlike most four-and-a-half-year-old's, a large percentage of blastocysts fail to implant and are naturally discarded by the body.

106 posted on 10/25/2006 2:07:00 PM PDT by atlaw
[ Post Reply | Private Reply | To 62 | View Replies ]


To: atlaw

Of course, I bow down to your definition. Had to steal my thunder, huh? :-)


108 posted on 10/25/2006 2:10:41 PM PDT by PurVirgo (SafeClear seems to be more about revenue than safety.)
[ Post Reply | Private Reply | To 106 | View Replies ]

To: atlaw

Well, it stands to reason that the vast majority of four-and-a-half year olds were expelled from the body at some point...

But, of course, my point was that a blastocyst is a certain stage in human development, just as a four-and-a-half year old is a certain stage in human development.

Surely, you would agree...


112 posted on 10/25/2006 2:58:24 PM PDT by gridlock (The 'Pubbies will pick up at least TWO seats in the Senate and FOUR seats in the House in 2006)
[ Post Reply | Private Reply | To 106 | View Replies ]

Free Republic
Browse · Search
News/Activism
Topics · Post Article


FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson