. The pathology and differential diagnosis of infectious diseases of animals : prepared for students and practitioners of veterinary medicine . Veterinary medicine; Communicable diseases in animals. SWINE PLAGUE 53 Two kinds of pneumonia are encountered, namely, lobar and catarrhal or broncho-pneumonia. In the former the vesicular portion of the lung substance is chiefly affected; in the latter the smaller bronchioles are primarily attacked and the alveoli secondarily. In croupous-pneumonia, there is, following the stage of congestion, an emigration of red blood corpuscles, some leucocytes, an
. The pathology and differential diagnosis of infectious diseases of animals : prepared for students and practitioners of veterinary medicine . Veterinary medicine; Communicable diseases in animals. SWINE PLAGUE 53 Two kinds of pneumonia are encountered, namely, lobar and catarrhal or broncho-pneumonia. In the former the vesicular portion of the lung substance is chiefly affected; in the latter the smaller bronchioles are primarily attacked and the alveoli secondarily. In croupous-pneumonia, there is, following the stage of congestion, an emigration of red blood corpuscles, some leucocytes, and an exudate of fibrin into the air spaces. These elements are firmly matted together by the coagulating fibrin, making the diseased lung firm to. Fig. 5. eight lung of pig. the stippled portion is usually involved in cases op infectious pneumonia ob st\1nb plague, (b) ventral lobe, (c) cephalic lobe, (a) principal lobe. the ventral lobe is usually the seat of the more ad- vanced disease and consequently the first to become hepatized. the cephalic portion op the principal lobe (x) is usually hepatized and the remaining portion deeply reddened. the touch. In broncho-pneumonia the catarrhal condition of the smaller air tubes makes them impervious to air. The lung tissue which they supply is gradually emptied of air and assumes the appearance of red flesh, owing to the collapse of the walls of the alveoli and the distended condition of the capillary network. Subse- quently the inflammation extends into the alveoli, which then become distertded with cellular masses. The nature of the lung disease will depend more or less upon the mode of entrance of the virus. If it enters only by way of the air tubes it will appear perhaps as a broncho-pneumonia. If it enters the lung tissue through the circulation we may have more or less. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectveterin, bookyear1916
