. A manual of bacteriology. Bacteriology. • PATHOGENIC BACTERIA. 30c; often contains great numbers of the diplococci. The virulence of the organism is very variable. In the sputum of a case of lobar pneumonia, early in the disease, it is likely to be virulent. The virulence is best maintained by repeated inoculations into mice or rabbits. The Micrococcus lanceolatus has been detected very fre- quently in the mouths of healthy individuals. But under these conditions it is not, however, pathogenic for animals in many. Fig. 72.—Pneumococciis, showing capsule, from pleuritic fluid cf infected rabb
. A manual of bacteriology. Bacteriology. • PATHOGENIC BACTERIA. 30c; often contains great numbers of the diplococci. The virulence of the organism is very variable. In the sputum of a case of lobar pneumonia, early in the disease, it is likely to be virulent. The virulence is best maintained by repeated inoculations into mice or rabbits. The Micrococcus lanceolatus has been detected very fre- quently in the mouths of healthy individuals. But under these conditions it is not, however, pathogenic for animals in many. Fig. 72.—Pneumococciis, showing capsule, from pleuritic fluid cf infected rabbit, stained by second method of Hiss. instances, being found virulent in only from 15 to 20 per cent, of such cases. While it is unquestionably the cause of croupous or lobar pneumonia in man in most if not in all cases, there are competent observers who hold that lobar pneumonia is also ca"used by other bacteria. In that disease the characteristic lesion consists of an inflammation of the lung, involving large areas—usually one or several lobes. An exudate is poured into the air-vesicles, which in the early part of the disease contains red blood-cells, imparting the rusty color to the sputum. The principal element in the exudate is fibrin; it also contains leuko-. 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 Williams, Herbert Upham, 1866-; Bolton, Benjamin Meade, 1857-1929. Philadelphia, P. Blakiston's Son & Co.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbacteri, bookyear1908
