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Cytochemical localization of mercury in Saccharomyces cerevisiae treated with mercuric chloride

SG Whittaker, DG Smith, JR Foster and IR Rowland

Department of Biology, University College London, United Kingdom.

We describe a cytochemical method for localizing mercury at the electron microscopic level in the yeast Saccharomyces cerevisiae. After addition of a lethal concentration of mercuric chloride to growing yeast cells, mercury was associated with the cell wall and cytoplasmic membrane. Little or no mercury was present in the cytoplasm. Electron probe X-ray microanalysis (EPMA) confirmed that the cytochemical reaction, visualized as mercury-silver complexes, was localized in dense bodies consisting of a core of mercury sulfide polymers surrounded by a shell of silver atoms.

Volume 38, Issue 6, pp. 823-827, 06/01/1990
Copyright © 1990 by The Histochemical Society


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