∞ generated and posted on 2016.08.24 ∞
Description of lipid bilayers making up cell membranes, one which considers not just the state of the lipid constituents but protein presence as well.
The fluid is the lipid bilayer, making up an oily sea. Both because of their relatively large size and since many are anchored in place, membrane proteins represent relatively stationary blobs that "float" within this oil.
Essentially all lipid bilayers within biological systems can be characterized as fluid mosaics.