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Quarterly Journal of Microscopical Science, Vol s3-105, 319-323, Copyright © 1964 by Company of Biologists

An Electron Microscopical Study of Isolated Mitochondrial Membranes Treated with Osmium Tetroxide, Potassium Permanganate, and Formaldehyde

K. DEUTSCH 1, W. KRAUSE 1, and S. ROSENTHAL 2

1 Department of Electron Microscopy, University of Greifswald, East Germany
2 Department of Physiological Chemistry, Humboldt University, Berlin

An investigation of isolated mitochondrial membranes, fixed with osmium tetroxide, potassium permanganate, or formaldehyde, shows that a great number of small particles are attached to their surfaces. Sections of specimens fixed in potassium permanganate or osmium tetroxide appear to confirm these findings. An attempt has been made to compare these particles with the ‘elementary particles’ described by Fernández-Morán and by Green, and also with particles revealed by negative staining of mitochondrial membranes, as reported by Stoeckenius. Specimens fixed with formaldehyde, whether isolated mitochondria or material fixed in bulk, show very poor contrast in electron micrographs.






© The Company of Biologists Ltd 1964