The Influence of CO(2) Supply on Colonial Formation of Leptospires.
The colonial formation of three serotypes of Leptospires on Cox's solid medium was promoted by microaerophilic incubation of one to three per cent of CO(2) supplied by carbon dioxide cylinder, sodium carbonate oxalic acid, and candle method. In anaerobic incubation Leptospira pomona grew the same as with CO(2) incubation. The pH of the medium was an important influence on the rate of colonial formation of Leptospires. Addition of hemoglobin and inactivation of rabbit serum was not an essential condition for rapid colonial formation. It was found that variation in the morphology of leptospiral colonies occurred with hemoglobin from different species and individuals.
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