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Appl Environ Microbiol. 1970 June; 19(6): 1001-1004
Copyright © 1970 American Society for Microbiology. All Rights Reserved.

Cytochemical Electron Microscopic Localization of Esterase Activity in Lactobacillus casei

J. P. Brown

Division of Laboratories and Research, New York State Department of Health, Albany, New York 12201

ABSTRACT

Enzymes capable of hydrolyzing thiolacetic acid in two strains of Lactobacillus casei were localized by the formation of electron-opaque PbS deposits in vivo in the presence of Pb(NO3)2. By electron microscopy, the deposition of PbS appeared primarily at the plasma membrane and at the outer surface of the cell wall.

Appl Environ Microbiol. 1970 June; 19(6): 1001-1004
Copyright © 1970 American Society for Microbiology. All Rights Reserved.





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Copyright © 1970 by the American Society for Microbiology. All rights reserved.