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.
Article| December 01 1917
THE BIOLOGICAL IDENTITY OF THE FRIEDLÄNDER BACILLUS
Calvin B. Coulter
From the Pathological Laboratory of The Roosevelt Hospital, New York.
Received: June 18 1917
Online Issn: 1540-9538
Print Issn: 0022-1007
Copyright, 1917, by The Rockefeller Institute for Medical Research New York
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Calvin B. Coulter; THE BIOLOGICAL IDENTITY OF THE FRIEDLÄNDER BACILLUS . J Exp Med 1 December 1917; 26 (6): 763–768. doi: https://doi.org/10.1084/jem.26.6.763
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