. The Journal of laboratory and clinical medicine . Fig. 6.—Section of kidney of Dog* 2. Area ofwell advanced connective tissue formation sur-rounded by intense interstitial round-cell infil-tration. Hematoxylin and eosin (X 100).. Fig. 7.—Roentgenogram of lower jaw ofDog 2, showing large rarefied areas at theapices of the two lower cuspids, which weredevitalized and infected. lesions in all of the rabbits. It was thought worth while to see whether thehighly specific localizing power could be made to disappear by injecting thestrain into a relatively insusceptible animal. Two guinea pigs were
. The Journal of laboratory and clinical medicine . Fig. 6.—Section of kidney of Dog* 2. Area ofwell advanced connective tissue formation sur-rounded by intense interstitial round-cell infil-tration. Hematoxylin and eosin (X 100).. Fig. 7.—Roentgenogram of lower jaw ofDog 2, showing large rarefied areas at theapices of the two lower cuspids, which weredevitalized and infected. lesions in all of the rabbits. It was thought worth while to see whether thehighly specific localizing power could be made to disappear by injecting thestrain into a relatively insusceptible animal. Two guinea pigs were injectedintraperitoneally. Both remained well, and were anesthetized for examina-tion seventeen days after injection. An abscess containing thick pus wasfound in the peritoneum of each. Cultures of the pus yielded a pure growthof the staphylococcus. Two rabbits were injected intravenously Avith theprimary culture in glucose-brain broth. Both remained well and were anes-thetized in forty-eight hours. No lesions were found in the kidneys or otherorgans, and the strain was lost. December 16, 1920, the pulps Avere removed from the lower cuspids of 716 THE JOURNAL OF LABORATORY AND CLINICAL MEDICINE Dog 3, and the pulp chamber
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