Cultivation of Ehrlichia Canis in a Continuous BALB/C Mouse Macrophage Cell Culture Line

Ultrastructure of Ehrlichia canis.

The ultrastructure of Ehrlichia canis was examined in both pulmonary mononuclear cells and in monocytes cultured from an infected dog. The cytoplasmic inclusions, or morulae, of E. canis consisted of a membrane-lined vacuole-containing elementary bodies which varied in size and number. The elementary bodies were bound by two trilamellar membranes. The organism shared morphological properties of...

Studies on Ehrlichia canis (syn. Rickettsia canis).

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Fc-receptor variants of a mouse macrophage cell line.

Variants of the J774 mouse macrophage cell line that lack immunologically important membrane receptors were isolated. After mutagenesis, variants were selected in a metrizamide gradient that separated cells heavily rosetted with sheep erythrocytes (E) coated with rabbit anti-E IgG (EIgG) from poorly rosetted cells. Stable variants that exhibited altered binding were found with a frequency of <1...

Differential Clearance and Immune Responses to Tick Cell vs. Macrophage Culture-Derived Ehrlichia chaffeensis in Mice

Diagnostic Evaluation of Ehrlichia canis Human Infections

Ehrlichiosis is an infection of the group of Vector Borne Diseases (VBD), caused by different echrlichia species (spp). Ehrlichiae are primarily recognized as causers of animal diseases, later as human diseases—Humane Monocytic (HME) and Humane Granulocytic (HGE) ehrlichiosis. The dogs, cats and rodents have natural reservoirs of ehrlichial agents. Ehcrlichiae are spread to human’s trough, the ...