Ultrastructural autometallography: a method for silver amplification of catalytic metals.
Author(s) -
Gorm Danscher,
J. O. Rytter Nørgaard
Publication year - 1985
Publication title -
journal of histochemistry and cytochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.971
H-Index - 124
eISSN - 1551-5044
pISSN - 0022-1554
DOI - 10.1177/33.7.4008918
Subject(s) - uranyl acetate , photographic emulsion , emulsion , mercury (programming language) , silver bromide , chemistry , bromide , gelatin , colloid , particle (ecology) , electron microscope , materials science , inorganic chemistry , silver halide , optics , biochemistry , organic chemistry , geology , physics , programming language , oceanography , computer science
The autometallographic technique involves application of a silver bromide-containing emulsion on the surface of ultrathin sections placed on grids that are subsequently exposed to a photographic developer. In tissue sections from animals treated intravitally with gold, silver, or mercury compounds, accumulations of the metals are visualized by autometallography and can be used for quantitative studies. After amplification, sections can be stained with lead citrate and uranyl acetate. Using autometallography, particles of colloidal gold dispersed in a film of gelatin showed a time-dependent growth and were gradually amplified up to 3.5-fold after 15 min of development. Hence the method may prove useful tracing colloidal gold particles in sections with low particle density, and be a powerful tool for revealing metals in biological tissues.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom