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Figure 7: Fibrocollagenous tissue and muscle bundles diffusely infiltrated by nests of malignant squamous cells exhibiting foci of keratinization (H and E, ×400)

Figure 7: Fibrocollagenous tissue and muscle bundles diffusely infiltrated by nests of malignant squamous cells exhibiting foci of keratinization (H and E, ×400)