End to end, that would form a line that would circle the earth twice.

So, all these guys over here, these are the true capillaries.

Then you start to take a look at adult life.

So we set out by looking at how these molecules are put together.

The walls are covered with villi where nutrient absorption takes place.

And we then can re perfuse the liver with cells, preserving the blood vessel tree.

You place the muscle cells on the outside.

So where is the blood gonna go?

The smallest blood vessels are called capillaries.

Let me actually just gonna call them that.

He had many capillaries burst in his legs.

We've got 19 billion of them in our bodies.

And what we do is we, to make a blood vessel, same strategy.

So at the same time that in telophase II these get pulled part, you have the cytokinesis.

Blood flows through blood vessels.

It's gonna be going initially through a giant vessel.

And the processes that cause this are things like arteriosclerosis for the large vessels or arteriolosclerosis for the small vessels.

And in fact, every cell in our body has a little blood vessel that's near by.

And the capsules in her blood stream.

Now, the first vessels, this tiny little vessel over here, it actually is not a capillary, eventhough we would assume it's a capillary,

So let me just draw this.

Blood runs in the veins.

Fine Structure Constant

And so this by definition then, not a true capillary, because it has some smooth muscle in the wall.

You know, where did these things come from?

But you have these two centrosomes, and they facilitate the development of these microtubules, which are

And the first thing that makes me think is that blood vessels are like highways for the tumor cells.

And once those vessels invade the cancer, it can expand, it can invade local tissues, and the same vessels that are feeding tumors allow cancer cells to exit into the circulation as metastases.

You've got pulmonary arteries carrying blood, you've got bronchial arteries carrying blood and that blood mixes.

And if you look carefully, you can see that there's a black blush right there.

We can do this because tumor blood vessels are unlike normal, healthy vessels we see in other places of the body they're abnormal, they're very poorly constructed, and because of that, they're highly vulnerable to treatments that target them.

It will create huge opportunities in technology.

Shut your mouth!

BBL's a liter in the field and only one PIV.

And you can think about any part of the body that you could be. Let's say a little toe cell. So let's say you're a toe cell and your job, of course, is to live and be happy,and you've got near by, a little blood vessel.

Resisted digit abduction tests the ulnar nerve.

And under the microscope, you can see hundreds of these brown stained blood vessels, capillaries that are feeding cancer cells, bringing oxygen and nutrients.

like red blood cells.

(Laughter)

Subdural hematoma.

So, even though there's a blood vessel near by, really, no flow is happening, so I'll just write no flow .

And this outer layer, this is the vasculature, which is incredible, around a human brain.

In fact, if you actually block angiogenesis and prevent blood vessels from ever reaching cancer cells, tumors simply can't grow up.

What could we be adding to our diet that's naturally antiangiogenic, and that could boost the body's defense system, and beat back those blood vessels that are feeding cancers?

Thrombosis is the process of a thrombus forming.