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Appl Environ Microbiol. 1990 Apr;56(4):1164-5.

Simplified Henry technique for initial recognition of Listeria colonies.

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  • U. S. Army Natick Research, Development, and Engineering Center, Massachusetts 01760.

Abstract

The Henry oblique transmitted-light viewing technique was modified to provide a more precise, convenient, and familiar manner with which to read (score) and recognize colonies of listeriae by their distinct bluish cast. The simplified technique involved illuminating each colony directly with a high-intensity lamp while viewing it with a hand lens at a precise angle in place of a scanning light microscope.

PMID:
2187403
[PubMed - indexed for MEDLINE]
PMCID:
PMC184362
Free PMC Article
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