Kidney. Kidney. Kidney.

Are you gonna steal my kidney and sell it?

You know all about imaging, right, ultrasound imaging.

I have kidney trouble.

That's actually the actual printer right now, and that's been printing this kidney structure that you see here.

Where is she?

What's the matter with her?

Tom's kidneys and liver are in bad shape.

Your brain and your mitochondria need sulfur.

I'm afraid your daughter shows signs of renal failure.

But we are able to actually reproduce the functionality of the liver structure, experimentally.

We can light up tumors

It was really something.

And what does happen with that eventually is pneumonia sets in and liver, kidney, brain damage.

Are those cells happy or not?

doctor, we have renal failure. we should have shut his kidneys down when he first came in. the power drain is too much. we're losing systolic pressure. what does that mean? anita, michael, wait outside. wilson, i think i have a right to be here, and i'd like to kn... outside now.

Tracey Gamley stepped up to give me the impossible kidney that I was never supposed to have.

Very quickly they told me,

You can actually see that kidney as it was printed earlier today.

The team from Taiwan was a little bit more ambitious.

like this kidney tumor, so that you can exactly see where the boundary is between the kidney tumor and the kidney you want to leave behind, or the liver tumor and the liver you want to leave behind.

Well, not the one we tagged!

Though the kidneys appear normal.

Did you know rats that ate genetically engineered corn had developed signs of liver and kidney toxicity?

But if we look on other parts of our bodies where we don't directly interact with the environment our kidneys, our livers, our hearts there is no way to say, by just looking at these organs, where in the world they would come from.

Doctor Any complains?

Heart attack, walking through the women's department.

Well, there are other cancer tumors in the abdomen quite lethal, very lethal actually pancreas, liver, kidney.

What you die of is increasing organ failure, with your respiratory, cardiac, renal, whatever organs packing up.

It's not something I was very happy about.

This is much sharper than an ultrasound would be.

Possible kidney or bladder irritation. You may wind up with increased bruising and bleeding.

So one of the pioneers, for example, is Dr. Anthony Atala, and he has been working on layering cells to create body parts bladders, valves, kidneys.

And their diagnosis was this

She's had this kidney thing since she was real young.

Well, I have to admit, I'm also somewhat embarrassed by that, because I still have two kidneys.

So, we stack these wafers together, using the kidney cells.

I'd probably be dead if I still had a kidney there.

Many people after a kidney transplant will develop a little fluid collection around the kidney.

His blood pressure's down. His kidneys are failing.

This triggers the pituitary gland, a pea sized gland found at the base of the brain, to release adrenocorticotropic hormone which then stimulates the adrenal gland sitting on top of the kidneys to release cortisol, the major stress hormone.

The email began, Last Tuesday,

This is Libby, or actually, this is an ultrasound image of Libby.

He glared at us like we'd asked for both his kidneys