. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. Fig. 55. Bartonella bacilliformis in stiiined blood from Oroya fever patient. Some cells show chains of parasites. Bodies with large dark nuclei are leuco- cytes (leuc). X about 1000. (After Strong et al.) cells are minute rounded bodies, some- times a few, some- times great masses of them (Fig. 56B). Some of these rounded bodies contain only one, two or four deep staining granules (Fig. 56A), while others contain large numbers of them. It appears that these granule - filled bodies break up into a large
. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. Fig. 55. Bartonella bacilliformis in stiiined blood from Oroya fever patient. Some cells show chains of parasites. Bodies with large dark nuclei are leuco- cytes (leuc). X about 1000. (After Strong et al.) cells are minute rounded bodies, some- times a few, some- times great masses of them (Fig. 56B). Some of these rounded bodies contain only one, two or four deep staining granules (Fig. 56A), while others contain large numbers of them. It appears that these granule - filled bodies break up into a large number of parts each containing one gran- ule; these become elongated, and finally appear as distinct rods containing the gran- ule at one end. In this condition they are identical with the parasites which occur in the red blood cor- puscles (Fig. 56C) and indicate the manner in which the corpus- cular parasites arise. Dr. Strong and his colleagues believe Bartonella bacilli- formis to be a pro- tozoan probably re- lated to the group of parasites known as the Piroplasmata, including the Texas fever parasite of cattle and a number of other disease-causing parasites of wild and domestic animals. Its exact classification cannot yet be determined, and. Fig. 56. Development of Bartonella bacilliformis in endothelial cells. A, endothelial cell, with large nucleus (n.) at left, containing five rounded bodies in early stage of development; B, endothelial cell show- ing rounded bodies developing large numbers of small rod-shaped parasites; C, red corpuscles lying near with parasites identical with those escaping from such a cell as shown in B. X 2000. (After Strong et al.). 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 Chandler, Asa Crawford, 1891-. New York, J. Wiley
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