UnitMembEMLab250.jpg (11444 bytes)
Early electron microscope images of many membranes shgowed the same 3-layered image. This was called the "Unit Membrane". More recent studies have shown that biological membranes are covered with wart-like particles.


UnitMembEMboslab.250jpg.jpg (11875 bytes)
The three layers were thought to represent a Protein Lipid sandwich with the lipids in the middle. Uneven areas are seen in this computer-enhanced image.

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