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Detection of Selenium Deposits in Escherichia coli by Electron Microscopy

¹ Warner-Lambert Research Institute, Morris Plains, New Jersey 07950, and Section of Biochemistry, Molecular and Cell Biology, Cornell University, Ithaca, New York 14850

ABSTRACT

Cells of Escherichia coli will reduce sodium selenite to elemental selenium. Examination by electron microscopy of E. coli cultures grown in the presence of sodium selenite show selenium deposited on the cell membrane and cell wall but not in the cytoplasm.

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