In non-muscle cells, actin filaments are formed at/near membrane surfaces.

Even with the 3-β-OH group near the membrane surface, it is not very exposed compared to the phospholipid head groups.

It can occur at any age and on a mucous membrane surface.

The enzyme is relatively abundant, making up 10-30% of the total protein in these bacteria and forms densely-packed structures on the membrane surface.

Susceptible cells are subject to lysis of exposed sphingomyelin on their membrane surfaces.

One area of investigation involves studies on the mechanisms by which proteins become attached to membrane surfaces.

In dead-end filtration the direction of the fluid flow is normal to the membrane surface.

More recently, it has been applied to study cake buildup on porous membrane surfaces.

The membrane surface is coated to attract certain chemicals.

These proteins are localised at the outer membrane surface and can cause frost damage to many plants.