The embryos.

And divides anew every 12 to 15 hours.

If this research is successful, it may then reduce the need to research and sacrifice human embryos.

So sometimes you'll say morula, and you go to blastula.

look like that, and then my embryoblast is going to look like this.

How are the embryos?

Birds have basically rudimentary tails.

But there are more important things that are already occurring embryo screening.

While we're talking about mammals, especially the ones that are closely related to us, the stage is the blastocyst stage, and the real differentiator is when people talk about just blastula and blastospheres.

Since it's so pluripotent, it can become germ plasm.

Beginning of the primitive vertebrae

Do you know what he's doing with the embryos?

But it doesn't have to just infect somatic cells, it could infect a germ cell.

So the debate obviously is when you start an embryonic stem cell line, you are destroying an embryo.

We know you can get to the embryos. Give us what we came for.

The zygote happens or gets created and starts splitting up the morula, and then it keeps splitting and it differentiates into the blastocyst, and then this is where the stem cells are.

On delivery, 50,000 more for each viable embryo.

It's got germ.

So that's what they call a stem cell line.

And then again.

Let me write those words down.

The embryos need to mature in a safe environment.

Mitosis is the mechanism, so now my trophoblast is going to

You take a six to eight cell embryo, you tease out one of the cells, you run a genetic test on that cell, and depending on the results of that test you either implant that embryo or you discard it.

So these all become zygotes, and then they allow them to develop, and they usually allow them to develop to the blastocyst stage.

The whole process of differentiation is actually fascinating, and we'll talk a lot more about that when we talk about stem cells, embryonic stem cells, and maybe we'll even talk about the debate of it.

And I have been fortunate enough to find things like the first eggs in the Western hemisphere and the first baby dinosaurs in nests, the first dinosaur embryos and massive accumulations of bones.

Fertilization.

Now, it can be a very confusing topic, because a lot of times in a lot of books on biology, you'll say, hey, you go from the morula to the blastula or the blastosphere stage.

All vertebrate embryos are inherently female, anyway.

45 Days

That's 1.5 million if you get all 15 species off the island. I'll get them all. Remember, viable embryos.

So at least my take on it is if you're against and I generally don't want to take a side on this, but if you are against research that involves embryonic stem cells because of the destruction of embryos, on that same, I guess, philosophical ground, you should also be against in vitro fertilization because both of these involve the destruction of zygotes.

A very non intuitive spelling of the coel part of blastocoel.

And this mass of cells, we can start calling it, this right here, this is referred to as the morula.

So eventually all of these turn into blastocysts.

Let me scroll down a little bit.

This is an extremely new field.

Let me write this down in a vibrant color.

So for various reasons, we took this oncogene, attached it to a blue marker, and we injected it into the embryos.

They have a blastocoel in the center, which is this area of fluid.

So why should you care? Bone marrow is a very rich source of adult stem cells.

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