. Pathogenic micro-organisms. A text-book of microbiology for physicians and students of medicine. (Based upon Williams' Bacteriology). Bacteriology; Pathogenic bacteria. 39° SPECIFIC MICRO-ORGANISMS dents of rabies regard them as protozoa, while others consider them to be products of cell degeneration. The evidence to de- cide the matter is not yet at hand'. They "Beem to occur only in rabies and to be constantly present in this Pig. 153.—Section through the cornu ammonis of brain of a rabid dog; stained by the method of Lentz. Five Negri bodies o£ different sizes are shown, en
. Pathogenic micro-organisms. A text-book of microbiology for physicians and students of medicine. (Based upon Williams' Bacteriology). Bacteriology; Pathogenic bacteria. 39° SPECIFIC MICRO-ORGANISMS dents of rabies regard them as protozoa, while others consider them to be products of cell degeneration. The evidence to de- cide the matter is not yet at hand'. They "Beem to occur only in rabies and to be constantly present in this Pig. 153.—Section through the cornu ammonis of brain of a rabid dog; stained by the method of Lentz. Five Negri bodies o£ different sizes are shown, enclosed within the ganglion cells. The smallest contains only three minute granules. (^Afler Lenlz,' Centralbl. f. Bakl, 1907, Abt. I, Vol. XLIV, p. 378.) Lyssa or rabies^ is primarily a disease of dogs but it occurs in other mammals as well, usually as a result of dog bites. In ani- mals inoculated directly into the brain with the most virulent material (fixed virus), the symptoms of rabies appear in 4 to 6 days and death occurs on the seventh day. Inoculation with the saliva or nervous tissue of a mad dog (street virus) rarely causes 1 For a general discussion ol rabies see Cumming: Journ. A. M. A., 1912, Vol. LVIII, pp. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original MacNeal, Ward J. , 1881-1946; Williams, Herbert Upham, 1866-. Philadelphia, P. Blakiston's Son & Co.
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