A Study of the Diphtheroids Found in Infectious Bovine Pyelonephritis

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Abstract
Some of the morph., staining, cultural, biological, fermentation, and agglutination properties of 19 diphtheroids from cases of infectious bovine pyelonephritis have been detd. The tabulated data were studied in an effort to classify these organisms, especially regarding their relationship to Corynebacterium renale, which has been described as the etiological agent of infectious bovine pyelonephritis. 13 of the organisms were indistinguishable from C. renale as described by Bergey. The properties of the other 6 organisms would not seem to allow them to be classified with any of the corynebacteria now described. The salient differences were that these 6 cultures required a richer medium for growth, had more curved pairs in stained preparations, digested litmus milk more vigorously, and produced acid in xylose as well as in fructose and glucose.