Capillary electrophoresis separations can have several hundred thousand theoretical plates.

In the capillary.

Or capillary adhesion?

pre capillary sphincters

It must be capillary action.

The DNA fragments that result are then separated and detected using electrophoresis.

So this is a fenestrated capillary.

Sometimes, they call them capillary beds.

How about wet adhesion? Or capillary adhesion?

This is our second type of capillary.

These pores are all over the capillary.

So basically what you're doing is, you're basically completely avoiding this capillary bed, by clamping down on these pre capillary sphincters.

So let me show you the third type of capillary.

And this one we call this a discontinuous, discontinuous capillary

So you have a capillary that's maybe running right along the surface.

And you might be thinking there's gotta be one more vessel type and there is and that's the capillary. So let me draw the capillary, so I'll do that over here.

And another name for it, discontinuous capillary, is, sometimes they call it sinusoids

And these pre capillary sphincters, what they do is they basically squeeze down.

This law is valid if the tube radius is smaller than the capillary length.

To introduce the sample, the capillary inlet is placed into a vial containing the sample.

In these systems, a section of the capillary itself is used as the detection cell.

So this red blood cell has moved into the capillary right by this thigh cell.

We worked with a theme, which is, you've got macrophages that are streaming down a capillary, and they're touching the surface of the capillary wall, and they're picking up information from cells that are on the capillary wall, and they are given this information that there's an inflammation somewhere outside, where they can't see and sense.

Now, the first vessels, this tiny little vessel over here, it actually is not a capillary, eventhough we would assume it's a capillary, 'cause it's coming after the arteriola, we call it a metarteriole, a metarteriole .

So when we use the word true capillary , we're really trying to distinguish form that metarteriole.

What the body does this is the nifty concept is that there're these pre capillary sphincters.

Characterization by Iso enzyme Electrophoresis of Trypanozoon Stock from Sleeping Sickness endemic area of South East Uganda , Bulletin of the World Health Organization 70 (50 631 1992)

And this third capillary bed, may be going down to your foot. So you have blood in your foot.

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

So really every opportunity for things to get out of the capillary is available in those discontinuous or sinusoid capillaries

I will show how the capillary action works, how it feeds, I'll be able to get all the cells inside that stem.

So that capillary looks actually quite different as you can see from the other things that we've drawn the veins and arteries.

So it's kind of neat use of smooth muscle, to control even at the capillary bed level, where the blood is flowing.

Incidentally, that the gills of fish are bright red is because there are many 'capillary vessels' collected there, the same as for lungs.

In 2007, he toured the U.S. with the Philadelphia band Capillary Action and Melvins, and Europe and Japan with the Italian band Zu.

And if they do, let's say we do not want blood to come to this capillary bed, we wanna save the blood for something else.

Well, these smooth muscle pre capillary sphincters, they squeeze down, and as the result, you really don't get any blood flow going through these areas.

Couple of things you'll notice, you'll see that there are 4 nuclei, so four cells here, making up the part of the capillary we're looking at.

It's capillary action and transpiration pulls water up, a drop at a time, pulling it, releasing it from a leaf and pulling it up through the roots.

They repeated the X ray experiment, but with the crystal surrounded by its mother liquor and sealed in a glass capillary, obtaining patterns with large numbers of crystalline reflections.

The system's main components are a sample vial, source and destination vials, a capillary, electrodes, a high voltage power supply, a detector, and a data output and handling device.

And you know of course in real life you don't have three such a capillary beds, which is what I'm drawing here, but really of thousands and thousands, right?

It's gonna come down let's say, this way, through the arterial, and let's say some of the blood is gonna continue down this way, maybe to another capillary bed.

This is its membrane right here, super thin, almost one cell thick. And then you have a capillary running right next to it. Let me do that in a neutral color.

So we often talk about capillary beds, but I thought that it would be fun to get really up close and really get a good understanding of how these things work.