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Photomicrograph of the most common histopathology type of malignant melanoma (epithelioid), showing formation of cell nests, with the presence of multinucleated giant cells and atypical mitotic figures, HE, Objective 40 × (A). Canine oral malignant melanoma, pigmented, exophytic mass protruding from the gingiva (B). Formalin-fixed tissue. Photographs are courtesy of Professor Dr. José Guilherme Xavier.
