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CHAPTER 1 - THE CELL
Histology Guide
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FIGURE

NAME
Fig 011 Freeze Fracture
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T. Clark Brelje
Jean Magney
University of Minnesota
Minneapolis, MN

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University of Minnesota
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Robert L. Sorenson, Ph.D.

University of Minnesota
Department of Genetics, Cell Biology and Development
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Minneapolis, MN 55455

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Fig 011 Freeze Fracture

Freeze Fracture

A critical feature of freeze fracture is the tendency of the fracture to split membranes through the hydrophobic core of the lipid bilayer.

  • Most proteins (or complexes of proteins; tan) remain embedded in the inner half of the plasma membrane adjacent to the cytoplasm. This is known as the protoplasmic face (or P-Face).
  • Fewer particles are found in the outer half of the plasma membrane facing the extracellular space. This is known as the extracellular face (or E-Face).
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