PubMed HealthSearch

PubMed · 117981

A simplified technique to prepare fungal specimens for scanning electron microscopy.

Abstract

A simplified technique to prepare fungal specimens for scanning electron microscopy is described and discussed. Fixation in either 6% glutaraldehyde or 2% Os04 (both unbuffered aqueous solutions), yielded good results. The minimum fixation time in OSO4 was 2 h, in glutaraldehyde 4 to 5 h. Chemical dehydration with 2-methoxyethanol or 2,2-dimethoxypropane proved to be useful since it considerably reduced the preparation time. Because of the relatively few changes of reagent solutions during the whole process, the fungal specimens were less disturbed without much loss of material. The preparation technique described has been applied to specimens of various fungal groups with good results.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

R A Samson, J A Stalpers, W Verkerke. 1979. A simplified technique to prepare fungal specimens for scanning electron microscopy.. https://pubmed.ncbi.nlm.nih.gov/117981/

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

[Differential staining of pancreatic islet A- and B-cells using Rouge's fixative and a modified Gomori method].

Roug's fixative fluid is suggested to fix the pancreas with subsequent staining of the islet A- and B-cells. Rouget's fluid differs from Bouin's fluid in that picric acid is substituted for distilled water, and thus, it is unnecesary to extract the acid from the preparation. The fixation ensures good quality in demonstration specific granulation and preserves it in B-cells. Gormori's modification of the method to stain the slices with aldehyd-fuchsin and subsequent staining with alum carmine and orange G reveals both B- and A-cells. The manipulations presented perfect the quality of histochemical reactions.

Fixatives

The application of cytochemistry to automation.

The application of cytochemical techniques for use with automated instruments introduces a variety of problems not encountered with traditional cytochemical stains prepared for human visualization. This is particularly true for flow-cytophotometers, which require that cells be stained in suspension, making it difficult to remove reagents once they are added to a staining mixture. It is much less a problem for pattern recognition instruments. The major difficulties relate to cell preparation, fixation, staining, controls and interpretation of instrumental data. The new cytochemical techniques or modifications of existing methods that are required for use with such instruments present a fresh challenge to cytochemists. The need for such methods is great and the rewards may be equivalent.

Fixatives