Merck Manual

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Morula, blood smear, dog
Morula, blood smear, dog

    Photomicrograph of a blood smear from a dog showing the morula of a rickettsial organism in the cytoplasm of a neutrophil (cell on left stained purple). The most likely infectious agent is Anaplasma phagocytophilum.

Courtesy of Dr. Darren Wood.