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.

The average size and density of the pores can be controlled during the manufacturing process.

When the heart relaxes, blood is drawn back toward the heart through open ended pores (ostia).

The temperature at which the liquid sample is sucked into the sealed capillary is the boiling point of the sample.

Conceptacles open to the environment via one or many pores, depending on the species and the type of conceptacle.

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

Blood brain barrier The blood brain barrier is a part of the capillary system that prevents the entry of T cells into the central nervous system.

In 1884, the French microbiologist Charles Chamberland invented a filter (known today as the Chamberland filter or Chamberland Pasteur filter) with pores smaller than bacteria.

They can move rapidly through the pores between soil particles, and are typically found from the surface down to a depth of about 50 cm.

Because of the size exclusion, the colloidal particles are unable to pass through the pores of an ultrafiltration membrane with a size smaller than their own dimension.

Gravity does not play a role, as it is obvious from the fact that wetting takes place independent of the orientation of the pores relative to the direction of gravity.

We find life at the bottom of every long term, long distance drilling core into the center of rock that we bring up and there's bacteria in the pores of that rock.

The resulting tubes can be removed by mechanical forces for tubes up to 10 µm in length, i.e., by just drawing them out from the pores or by selectively dissolving the template.

The exact process is still not understood theoretically in detail but its known from experiments that low molar mass systems tend to fill the pores completely, whereas polymers of sufficient chain length just cover the walls.

Now if we look at animals, though, to be really maneuverable in all surfaces, the animals use hybrid mechanisms that include claws, and spines, and hairs, and pads, and glue, and capillary adhesion and a whole bunch of other things.

But they get the information that causes them to stop, causes them to internalize that they need to make all of the various parts that will cause them to change their shape, and try to get out of this capillary and find out what's going on.

And even when you close the pore which neurons can do, they can open and close these pores to generate electrical activity even when it's closed, because these ions are so small, they can actually sneak through, a few can sneak through at a time.

This process happens typically within a minute for temperatures about 50 K above the melting temperature or glass transition temperature, even for highly viscous polymers, such as, for instance, polytetrafluoroethylene, and this holds even for pores with an aspect ratio as large as 10,000.

In the lab, we micro pattern channels in the biomaterials on which we grow the cells, and this allows us to flow the cell culture media, the cells' food, through the scaffolds where we're growing the cells a lot like what you might expect from a capillary bed in the heart.