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The Journal of Experimental Medicine logoLink to The Journal of Experimental Medicine
. 1917 Dec 1;26(6):763–768. doi: 10.1084/jem.26.6.763

THE BIOLOGICAL IDENTITY OF THE FRIEDLÄNDER BACILLUS

Calvin B Coulter 1
PMCID: PMC2125806  PMID: 19868181

Abstract

We conclude therefore that this series of eleven lactose-negative organisms of the Friedländer type, grouped together by Perkins on the basis of fermentation reactions represents a single biological group. It can be distinguished from Bacillus aerogenes and other similar bacilli by cultural, fermentative, and serological reactions. There appears to be a close analogy between this group and Pneumococcus mucosus in the possession of a fixed cultural type, and the behavior toward immune serum. Both represent apparently a single biological group. Unfortunately no immune sera have been developed against the two strains that grew in moist and dry phases; it is possible that with immune sera for these light could be thrown on the relation suggested by Fitzgerald that the capsulated bacilli represent a parasitic development of the Bacillus coli group.

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Selected References

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  1. Wadsworth A. B., Kirkbride M. B. A NOTE ON THE PRODUCTION OF ANTIPNEUMOCOCCUS SERA. J Exp Med. 1917 May 1;25(5):629–632. doi: 10.1084/jem.25.5.629. [DOI] [PMC free article] [PubMed] [Google Scholar]

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