Figure 3From: Spindle cell oncocytoma of the adenohypophysis in a woman: a case report and review of the literature Nuclear expression of thyroid transcription factor 1 by tumour cells (original magnification, ×200; hematoxylin and eosin stain). Inset: A higher-magnification image showing the nuclear expression (original magnification, ×400; hematoxylin and eosin stain).Back to article page