He might need surgery

Yeah. You're recovering from heart surgery?

This is a recent cover of New York Magazine.

This is actually a heart valve that we've engineered, and you can see here, we have the structure of the heart valve and we've seeded that with cells, and then we exercise it.

But we were still using X rays, but we didn't even have a viewing box!

At 67 percent oxygen saturation, the normal is about 97.

lighthearted music man

There we go we're going on a mission.

So, here we are, mission. Big trouble.

But how many did we do the first one? 12.

And this valve and all valves in the heart are basically there to keep blood moving in the right direction.

But not as the guy on the table the guy doing open heart surgery.

If you get into that situation, it's like if you've been over eating, and you're about to have a heart attack

This is actually a heart valve, which we engineered.

They die of HlV, they die of hepatitis C, they die of infections of their heart valves, they die of infections of their brains, of their spines, of their hearts, of their bloodstream.

So, the most beautiful thing I found at least what I think is the most beautiful in the book, is this heart valve.

Here you've got the aortic valve.

Well, heart cells are pretty greedy.

I learned that you are in the hospital recovering from heart surgery.

And you can go inside the heart itself and repair the valves from the inside.

He can go inside, push inside of the heart, and really feel how the valves are moving.

What's the matter with him?

Now that heart.

My heart!

My heart.

Hold the hand palm up. Do this, don't move the wrist.

Your partner, he's had a heart attack.

Looks like he died of natural causes. Maybe a heart attack.

It's her heart.

Feel my heart.

(HEART MONITOR BEEPING)

(HEART MONITOR FLATLINING)

Heart attack.

I thought my heart was gonna explode.

It's actually a very low tech and very high tech product at the same time.

But there are other hollow organs that have added complexity to it.

He can go inside, push inside of the heart, and really feel how the valves are moving.

To figure out where those sounds come from, what I did is, I took the diagram of the heart that we'v been using and exaggerated the valves, made them really clear to see in this picture.

tearing their internal organs, their liver, their lungs, their heart bringing tissue, bone, blood, brain matter, and that's called a blowback.

So this is actually a Dutch company, so I called them up, and I asked,

This image was obtained with a real patient's permission .

Her heart certainly failed to beat.

Do you worry about what is going to kill you?

My heart...

Bruises on his heart.