The problem I have with defining "life" as Gunny has as not beginning until 28 days after conception (the joining of the male sperm and the female egg) is that once conception occurs the zygote contains all of the genetic information (DNA) necessary to become a child. Half of the genetic information comes from the mother's egg and half from the father's sperm. The zygot continues to divide, creating an inner group of cells with an outer shell. This stage is called a blastocyst. The inner group of cells will become the embryo, while the outer group of cells will become the membranes that nourish and protect it.

To me it makes sense the "life" begins at conception, as a single cell zygote, since at that point it contains everything to make a unique, individual and continues to divide on it's own. It happens without "brain".

Embryonic stem cell come from the blastocyst stage 4–5 days post fertilization, at which time they consist of 50–150 cells.

Every biology reference I have found talks about the beginning of life being the union of the two gametes, the male and female reproductive cells of any species.

Jim

I suggest reading, Declaration On The Production And The Scientific And Therapeutic Use Of Human Embryonic Stem Cells
http://www.vatican.va/roman_curia/pontifical_academies/acdlife/documents/rc_pa_acdlife_doc_20000824_cellule-staminali_en.html



----- Original Message -----
From: <mailto:bgunny7...@aol.com>bgunny7...@aol.com
To: <mailto:gbthomas8...@sbcglobal.net>gbthomas8...@sbcglobal.net
Sent: Wednesday, March 25, 2009 11:18 AM
Subject: Re: [TMIC] stem cell (OT?)

In a message dated 3/25/2009 11:06:05 AM Eastern Daylight Time, <mailto:gbthomas8...@sbcglobal.net>gbthomas8...@sbcglobal.net writes: Our former president, George W. Bush, so direspectfully referred to on this list as "dumdum," was simply against the use of our tax money for embryonic stem cell research in consideration for those opposed, on moral grounds, to the use of aborted fetuses. Stem cell research was not stopped. It has widely been proclaimed (even on this "list") that adult stem cell research has actually been more successful than embryonic cell research

Not necessarily aborted fetus's. Embryonic stem cells can be grown in a petri dish simply by marrying a male sperm with a female egg. It has nothing to do with an abortion at all. Adult stem cells have already been programmed, which are taken from an adult human, to make that persons body. When taken, they are cleaned by a process known as plasma pheresis, then reinjected into that same person. An embryonic stem cell has NOT been programmed to make anything yet. It can be coaxed to do so where an adult cannot. An embryo is considered just that because it does not become a fetus until it is infused with blood. That process doesn't happen until twenty eight days after conception, and, it has no brain. Taking that into consideration, it is not alive. It can become so if implanted into a female uterus, but not until. So, in all actuality, it just sits in that petri dish doing absolutely nothing. I hope this gives you better insight as to what an embryonic stem cell is.

Gunny

----
Jim Lubin
jlu...@eskimo.com
http://makoa.org/jim
disAbility Resources: http://www.makoa.org



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