Eperythrozoon wenyoni: a scanning electron microscope study

The morphologic characteristics of Eperythrozoon wenyoni were studied with the scanning electron microscope using blood from a naturally infected splenectomized Holstein-Friesan bull. Coccoid and oval organisms were seen in epicellular locations as solitary bodies and arranged in chains, clusters, o...

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Bibliographic Details
Published in:The Journal of parasitology 1973-10, Vol.59 (5), p.867-873
Main Authors: Keeton, K.S, Jain, N.C
Format: Article
Language:English
Subjects:
Anemia
Animals
Bacterial Infections - blood
Blood
Budding
Cattle
Cell Membrane - microbiology
Electron microscopes
Erythrocyte membrane
Erythrocytes
Erythrocytes - microbiology
Lesions
Male
Microscopy, Electron, Scanning
Mycoplasma
Mycoplasma - cytology
Parasites
Parasitism
Sepsis - blood
Staining and Labeling
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Summary:The morphologic characteristics of Eperythrozoon wenyoni were studied with the scanning electron microscope using blood from a naturally infected splenectomized Holstein-Friesan bull. Coccoid and oval organisms were seen in epicellular locations as solitary bodies and arranged in chains, clusters, or pairs. Budding seemed to be the primary mode of replication as structures resembling buds were encountered in association with some well-developed organisms. In some instances, the erythrocyte surface at the site of parasitic adherence seemed to be slightly depressed. Neither the erythrocyte surface membrane nor the morphology of the erythrocytes appeared significantly different from that of normal erythrocytes. The lack of notable erythrocyte membrane alterations was considered important in that anemia was not seen during or following parasitemia in this case.
ISSN:0022-3395
1937-2345
DOI:10.2307/3278425