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Bacterium dysenteriae Sonne: a study of forty strains with particular reference to the appearance of the colonies

Published online by Cambridge University Press:  15 May 2009

A. J. Rhodes
Affiliation:
From the Bacteriology Department, University of Edinburgh
Christine Reid
Affiliation:
From the Bacteriology Department, University of Edinburgh
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1. Certain appearances of the colonies and some biochemical reactions of forty strains of B. dysenteriae Sonne have been investigated.

2. In thirty-five strains definite raised papillae occurred on parent colonies after 3–5 days' growth on MacConkey's medium or ordinary agar.

3. Papillae were produced both by strains that fermented lactose in fluid culture and those that did not; in the former case they were pink, in the latter pale.

4. Papilla-producing and other strains could not be differentiated by various biochemical reactions or by straight agglutination tests.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1941

References

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