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Characteristics of Protozoa in Avian Blood

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veterinary

Protozoan	Host Cell	Pigment Present	Merogony in Blood
Plasmodium	RBC	Yes	Yes
Haemoproteus	RBC	Yes	No
Leucocytozoon	RBC or WBC; distorted and enlarged, often beyond recognition	No	No
Isospora	WBC; in nuclear indentation	No	No^a
Hepatozoon^b	WBC; large, elongated oval shape	No	No
Babesia^b	RBC	No	No^c
^aMultiple intracellular parasites may be present in acute infections.
^bUncommon to rare.
^cBabesia is piriform and can be in a V, X, or fan pattern.