Old man Placenta control.

It'll turn into the placenta.

That is going to turn into the placenta, and I'll do a future video where in a human, it'll turn into a placenta.

During pregnancy, they form the placenta, which connects mom and baby.

So when Tyrone tells me that the placenta is an ancient organ,

In fact, our invention by our I mean we mammals one of our big inventions was the placenta.

PCBs, DDT cross the placenta and effectively determine the likelihood of developing breast cancer and obesity and diabetes already when the baby's in the womb.

In part, amphibians are good indicators and more sensitive because they don't have protection from contaminants in the water no eggshells, no membranes and no placenta.

And we're working a lot with the stem cells that we published on two years ago, stem cells from the amniotic fluid, and the placenta, which have those properties.

And so when you realize that chemicals can pass the placenta and go into your unborn child, it made me start to think, what would my fetus say to me?

The focus of this video is the fact that these cells, which at this point are they've differentiated themselves away from the placenta cells, but they still haven't decided what they're going to become.

But it turns out that this ancient structure that separates us from other animals, the placenta, cannot evolve or adapt fast enough because of the rate that we're generating new chemicals that it's never seen before.

But the placenta is really kind of what the embryo develops inside of, and it's the interface, especially in humans and in mammals, between the developing fetus and its mother, so it kind of is the exchange mechanism that separates their two systems, but allows the necessary functions to go on between them.