. The pathology and differential diagnosis of infectious diseases of animals. Veterinary medicine -- Diagnosis; Communicable diseases in animals. MORBID ANATOMY 119 Fowl No. 501, fed culture March 26. Mar. 26 28 Apr. 2 3 Xumber of! Number of red cor- white cor- puscles I puscles per c. mm. per c. mm. 3,53500° no 2,430,000 I 684,210 106 I 1, 1^,940 80,000 Well. Fowl eats very little. Blood verv pale: fowl weak; refuses food. Verv weak; many red corpuscles at- tacked by leucocytes. Found dead. In fresh preparations of the blood of affected fowls exam- ined in To
. The pathology and differential diagnosis of infectious diseases of animals. Veterinary medicine -- Diagnosis; Communicable diseases in animals. MORBID ANATOMY 119 Fowl No. 501, fed culture March 26. Mar. 26 28 Apr. 2 3 Xumber of! Number of red cor- white cor- puscles I puscles per c. mm. per c. mm. 3,53500° no 2,430,000 I 684,210 106 I 1, 1^,940 80,000 Well. Fowl eats very little. Blood verv pale: fowl weak; refuses food. Verv weak; many red corpuscles at- tacked by leucocytes. Found dead. In fresh preparations of the blood of affected fowls exam- ined in Toisson's fluid, red which take the violet stain more or less intensely throughout are frequently observed. In the blood of poultry two distinct classes of white corpuscles are conspicuous. The first which predomin- ates in numbers, contains nuclei with from one to four lobes, and the cyto- plasm is sprinkled with a variable number of round, elongated, or spider-shaped bodies. In the fresh con- dition they are highly re- fractory. They stain with eosin, and if the prepara- tions are heated sufficiently thev will retain certain of the' aniline dyes. The other class consists of round or nearly round cells which takes the blue stain feebly. Usually it is difficult to detect the nucleus, although it is occasionally dis- tinct Between these two types there are many varieties. The leucocytes containing the spindle-shaped bodies appear to be the phagocytes, as they were the only ones which were observed to engulf the red corpuscles. Bacteria have not been demonstrated in these cells, although their presence has, in. .s7/o: Section of chicken's liver 'inq; blood 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 Moore, Veranus A. (Veranus Alva), 1859-1931. Ithaca, N. Y. , Taylor & Carpenter
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