Figure 2: Aspirate from the liver of a 2 year old cat with copper toxicity

 

The hepatocytes on the edge of this dense cluster are slightly distended and contain moderate amounts of blue-green granules in the cytoplasm (arrows). Rare granules were more turquoise and slightly crystalline when the focus was moved up and down. This is hard to capture in a still image (modified Wright’s stain, 100x objective). The latter color and texture is typical of copper, however the other pigment can be (and was initially) misidentified as lipofuscin.

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