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Color Inserts

Figure 4.2 Focal chromaffin cell hyperplasia in a male F344 rat that is located at the corticomedullary junction. (See page 117 for complete legend.)

Figure 4.3 This figure contrasts the usual morphology of chromaffin cell hyperplasia (small cells, left arrow) with a less common lesion (right arrow) in which the hyperplastic cells are larger than the surrounding normal chromaffin cells and have abundant cytoplasm, vesicular nuclei, and prominent nucleoli.