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Fig. 4 | Acta Veterinaria Scandinavica

Fig. 4

From: Severe deforming dermatitis in a kitten caused by Caryospora bigenetica

Fig. 4

Ultrastructure (transmission electron microscopy) of cutaneous Caryospora bigenetica infection. a A macrophage occupied by a meront with immature merozoites, scale bar = 5 µm. b An unsporulated oocyst within the macrophage consisting mainly of amylopectin granules and lipids, scale bar = 5 µm. c Three C. bigenetica tachyzoites (tachyzoic merozoites) in the cytoplasm of a macrophage. Banana-shaped appearance, supra-basilar nucleus, and the apical part with a conoid ring, radially orientated rod-like micronemes (black arrows), and obliquely orientated rhoptries (white arrows) are typical morphological features of coccidian apicomplexan protozoa, scale bar = 2 µm

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