Page 966 - Clinical Small Animal Internal Medicine

Ehrlichia canis Figure 93.1 Phylogeny of selected
organisms of veterinary importance from
Ehrlichia chaffeensis Anaplasmataceae and Bartonellaceae
families. The scale bar indicates 0.02
VetBooks.ir Ehrlichia ewingii substitutions per nucleotide position of the
16S rRNA gene.
Anaplasma phagocytophilum
Anaplasmataceae
Family
Anaplasma platys
Wolbachia pipientis

Neorickettsia helminthoeca
Bartonella clarridgeiae

Bartonella vinsonii berkhoffii Bartonellaceae
Family
Bartonella henselae

0.02 Bartonella koehlerae

Figure 93.2 Ehrlichial morulae (black
(a) (b) arrows) in canine leukocytes as seen in
blood smears (a–d) and by electron
microscopy (e,f). (a) E. canis morula in a
monocyte. (b) E. canis morulae in a
lymphocyte. (c) Morula in a neutrophil
compatible with A. phagocytophilum or
E. ewingii. (d) A. platys morula in a
platelet. (e) Electron microscopy of a
morula in a granulocyte. (f) Magnification
of the morula seen in (e). Source: (a–d)
from Allison and Little (2013).
10 m
10 m Reproduced with permission from John
Wiley & Sons. (e,f) Courtesy of Kristin
Nunez, Purdue University, USA.
(c) (d)

10 m 10 m

(e) (f)

2 m 1 m