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Isolated mitochondria that have been quick-frozen, fractured and
deep-etched show some space between the inner and outer membranes.
Arcs of tubules (arrow), where they are tangentially fractured,
show the helically arrayed zipper on the outer margin of the curved
tubular cristae. A pair of particles (arrowheads) can be seen
on the cross-fractured tubules. These may be bound to transmembrane
subunits. Such complexes are thought to represent the
F1F0 synthases. EM taken on 5/11/88 by C.
Schroeder with Zeiss 10A TEM. Neg. 40,500X. Bar = 0.1µm. Published in
J. Cell Biol. 108:2233-2240, 1989.
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