Fig. 3. Transmission electron micrographs showing the intravascular location and structure of Babesia organisms in the kidney and brain of eastern grey kangaroos. (A) Kidney, the cytoplasm of two adjacent erythrocytes contains Babesia merozoites (arrows) with a membrane-bound nucleus (N) and cytoplasm containing polymorphic vacuoles and some electron dense particles (C) (scale bar = 1.0 μm). (B) Brain, adjacent to an intact erythrocyte and the nucleus of an endothelial cell is a cluster of extraerythrocytic Babesia organisms containing electron dense micronemes and developing pellicles (arrows) (scale bar = 2.0 μm). (C) Brain, within the capillary lumen is a cluster of eight or nine extraerythrocytic organisms (thick arrow) and a distorted erythrocyte (thin arrow) containing four intracytoplasmic parasites (scale bar = 5.0 μm).

Published as part of Donahoe, Shannon L., Peacock, Christopher S., Choo, Ace Y.L., Cook, Roger W., O'Donoghue, Peter, Crameri, Sandra, Vogelnest, Larry, Gordon, Anita N., Scott, Jenni L. & Rose, Karrie, 2015, A retrospective study of Babesia macropus associated with morbidity and mortality in eastern grey kangaroos (Macropus giganteus) and agile wallabies (Macropus agilis), pp. 268-276 in International Journal for Parasitology: Parasites and Wildlife 4 (2) on page 273, DOI: 10.1016/j.ijppaw.2015.02.002, http://zenodo.org/record/12837448