Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-23T09:15:43.034Z Has data issue: false hasContentIssue false

Cryo-Fracture or Freeze-Fracture, a Method to Expose Internal Tissue Surfaces and Cell Surfaces for Viewing in the Scanning Electron Microscope

Published online by Cambridge University Press:  14 March 2018

Jeannette Taylor*
Affiliation:
Emory University, Atlanta, Georgia

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Cryo-fracture, in conjunction with critical point drying is a method used to prepare biological samples in order to expose, for viewing via scanning electron microscopy, those naturally occurring surfaces which might otherwise remain obscure. For example, the Bowman’s capsule and tubules of a kidney, tiny blood vessels on any organ, inter-cellular spaces in liver or alveoli in the lungs. Also, some surfaces, not normally exposed at all such as the membrane surface of a nuclear envelope, mitochondria or chloroplasts or the cytoplasm of a cell, can be brought to light with this method. Herein is a review of the development of cryo-fracture and how it is currently used at our facility.

Type
Research Article
Copyright
Copyright © Microscopy Society of America 2008

References

Haggis, G. H., “Cryofracture of Biological Material”, Scanning Electron Microscopy, April, 1970, pp. 97-104 *Though sucrose is an osmotic agent rather than a buffering agent, in his report, Dr. Haggis’ indeed describes his fixative as “2% glutaraldehyde in sucrose buffer at pH 7.4”.Google Scholar
Humphreys, Walter J., Spurlock, Ben O., & Johnson, Janet S., “Critical Point Drying of Freeze-Fractured Tissue for Scanning Electron Microscopy”, Proceeding of Thirty-First Annual EMSA Meeting, 1973, pp. 452-453Google Scholar
Humphreys, W. J., Spurlock, B. O., & Johnson, J. S., “Critical Point Drying of Ethanol Infiltrated Cryofractured Biological Specimens for Scanning Electron Microscopy”, Scanning Electron Microscopy, Part I, April 1974, pp. 275-282Google Scholar
Humphreys, Walter J., Spurlock, Ben O., & Johnson, Janet S., “Transmission Electron Microscopy of Tissue Prepared for Scanning Electron Microscopy by Ethanol- Cryofracture”, Stain Technology, 1975, pp. 119-125Google Scholar
Haggis, G. H. & Phipps-Todd, Beverly, “Freeze Fracture for Scanning Electron Microscopy”, Journal of Microscopy, Vol. III, Part 2, November 1977, pp. 193-201 Google Scholar
Apkarian, R. & Curtis, J. C., “SEM Cryofracture Study of Ovarian Follicles of Immature Rats”, Scanning Electron Microscopy, Vol. VI, 1981, pp. 165-172Google Scholar
Hotchkiss, Anne E., Martin, Vicki J., & Apkarian, Robert P., “A Scanning Electron Microscopic Surface and Cryofracture Study of Development in the Planulae of the Hydrozoan, Pennaria tiarella”, Scanning Electron Microscopy, Vol. II, 1984, pp. 717-727.Google Scholar