PMC5012847_01
Thyroid surgical resection specimen.. Notes: Napsin A-positive immunostaining with negative internal control of normal thyroid tissue (A), HTG-negative immunostaining of the tumor with positive internal control (B), and mass spectrometry diagram showing the presence of V600E mutation peak (arrow) (C). Lung biopsy: napsin A-positive immunostaining (D), HTG-negative immunostaining (E), and mass spectrometry diagram showing the presence of V600E mutation peak (arrow) (F). Magnification 10x.
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