A Study of the Action of Antibiotics in Vitro on Microorganisms Isolated from Root Canals

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The medium originated by Brewer (J. A. M. A., 115: 598, 1940) as modified by the National Institute of Health for sterility tests. Obtained from the Baltimore Biological Laboratories, Baltimore, Md.

A modification of the dish devised by Spray ( J. Lab. and Clin. Med., 16: 203, 1930). Subsequent experiments showed that this method is far less satisfactory than the use of the Brewer anaerobic jar.

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Sherman, J.M. , Personal communication.

Niven, D.F. , JR. , Kiziuta, A. , AND White, J.C. , Synthesis of a polysaccharide from sucrose by streptococcus s. b. e. J. Bact., 51: 711, 1946.