Fig. 2From: Spindle cell variant of medullary thyroid carcinoma: a clinicopathologic study of four casesImmunohistochemistry. The tumor cells are positive for CT (a), CD56 (b), CgA (c) and Syn (d) in the cytoplasm (Original magnification, × 200). The tumor cells are positive for TTF-1(e) and Ki-67 (f) in the the nucleus (Original magnification, × 200)Back to article page