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THE USE OF WATER‐SOLUBLE GLYCOL METHACRYLATE IN ULTRASTRUCTURAL CYTOCHEMISTRY
Author(s) -
Leduc Elizabeth,
Marinozzi V.,
Bernhard W.
Publication year - 1963
Publication title -
journal of the royal microscopical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0368-3974
DOI - 10.1111/j.1365-2818.1963.tb02081.x
Subject(s) - fixative , cytochemistry , glutaraldehyde , ultrastructure , methacrylate , chemistry , ethylene glycol , nucleic acid , biochemistry , cytoplasm , hydrolysis , enzyme , chromatography , organic chemistry , biology , anatomy , copolymer , polymer
SYNOPSIS A procedure for the application of cytochemical techniques directly on ultrathin sections for electron microscopy has been developed with the use of water‐soluble plastics, which act both as dehydrating agents and embedding media. Our approach has been to selectively extract proteins and nucleic acids from ultrathin sections of cells and viruses by specific enzyme hydrolysis. Glycol methacrylate is particularly useful as a component of the embedding medium because it enhances the penetrability of the enzyme into the section and preserves the biological materials in such a way that they remain susceptible to enzymic digestion. Various degrees of morphological preservation of ultrastructure are obtained with the aldehyde fixatives, formalin, acrplein, and glutaraldehyde, followed by. embedding in glycol methacrylate and the choice of fixative, at present, depends on the system which is to be studied. It is believed that the proposed method can be developed further and be used for other approaches to ultrastructural cytochemistry.