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Figure 8: (a) Squamous cell carcinoma component with positive immunostaining for p63. (b) Squamous cell carcinoma component with positive immunostaining for cytokeratin 5/6. (c) Squamous cell carcinoma component with negative immunostaining for thyroid transcription factor-1. (d) Squamous cell carcinoma component with negative immunostaining for thyroglobulin

Figure 8: (a) Squamous cell carcinoma component with positive immunostaining for p63. (b) Squamous cell carcinoma component with positive immunostaining for cytokeratin 5/6. (c) Squamous cell carcinoma component with negative immunostaining for thyroid transcription factor-1. (d) Squamous cell carcinoma component with negative immunostaining for thyroglobulin