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Figure 1: (a) Cut section of pheochromocytoma with chromaffin reaction, (b) photomicrograph show cells with amphophilic cytoplasm and vesicular nucleus arranged in Zellballen pattern separated by vascularized connective tissue (H and E, ×10), (c) show focal ganglioneuroma component in a pheochromocytoma (H and E, ×10), (d) argentaffin granules in the cytoplasm of tumor cells (argentaffin reaction, ×40) |
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