Figure 4: Vitreous aspirate from a 6 year-old Labrador retriever

Fig4_Oct2018

In a previously seen case of protothecosis at our institution, the organism had wedge-shaped endospores, in contrast to the current case, which showed side-to-side endosporulation. There is an adjacent needle-like melanin granule similar to that seen in the current case (Wright’s stain, 100x objective).

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