Whale blubber.

Cortisol is a major stress hormone involved in making skin cells churn out oily lipids from special glands called sebaceous glands.

No thanks, I'd actually rather store this energy.

I'll nicely demonstrate that for you. (Laughter)

To make matters worse, Justin is a boy, meaning he's got more testosterone than girls.

And, there are other frequently dividing cells in your body

It was awesome.

You probably know, if you've been paying attention to some of the science literature that you can now take a skin cell and encourage it to become a liver cell or a heart cell or a kidney cell or a brain cell for any of us.

And if this continues the toe cell would die.

And this is the perfect storm for forming a pimple.

And it consists of seven chapters the chapters are skin, bones, meat, internal organs, blood, fat and miscellaneous.

All done in the lab.

Ceramides. They act as a signaling molecule in skin.

That turns out to be a big deal because now you can take, not just mouse cells, but you can human skin cells and turn them into human stem cells.

And then what they did in October is they took skin cells, turned them into stem cells and began to turn them into liver cells.

But it's taken a long time to get there.

I guess in plural it's scrotal, like medium and media.

You place the muscle cells on the outside.

Mitosis occurs in pretty much all of our somatic cells as our skin cells replicate, and our hair cells and all the tissue in our body as it duplicates itself, it goes through mitosis.

And in our lab, we are focused on taking fat and reprogramming mounds of fat into fountains of youthful cells cells that we may use to then form other, more specialized, cells, which one day may be used as cell transplants.

Testosterone is another hormone that increases oil production in the skin.

liver, gall bladder, small intestine, and large intestine, also known as your colon.

So that all the cells of your body the skin cells, the cells of your liver, and of your heart, and even of your ear, those cells know, at a fundamental molecular level, whether they are XX or XY.

This is the guys on the rope, pulling open the carcass.

But on my left retina there is a bump, which is marked there by the red arrow.

And adult stem cells are found in you and me in our blood, in our bone marrow, in our fat, our skin and other organs.

May I have an ice bag?

You already saw the work by Tony Atala on TED, but this ability to start filling things like inkjet cartridges with cells are allowing us to print skin, organs and a whole series of other body parts.

The results revealed that in environment A, the cells formed muscle, in environment B, the cells formed bone, and in environment C, the cells formed fat cells.

This is fascinating. You probably know, some of you, that cells are continually renewed.

A couple of years ago, the Lasker Prize was awarded to the scientist Shinya Yamanaka for his research in which he took an adult skin cell, a fibroblast, and by manipulating just four genes, he induced that cell to revert to a pluripotential stem cell a cell potentially capable of becoming any cell in your body.

That's the good news.

Just as all carbs are not bad for you, all fats are not bad for you. There are good fats.

We have lots of cells that are not out for themselves anymore.

although he suffered from severe pseudofolliculitis nuchae.

You find these, for example, in fish oil.

0 body fat!

You made these with bacon grease.

And so indeed, there are times when we can find ingredients that are bad.

One that has just happened in the last few months is the successful approval of a drug for cystic fibrosis.

Breast density refers to the relative amount of fat pictured here in yellow versus connective and epithelial tissues pictured in pink.

I will not bring it to the scrotal.

They're a lot like embryonic stem cells except without the controversy.

I go in, tail comes off.

What is fat?