Hey-1 in normal pancreas and PDAC.

<p>a) Normal pancreas showing faint cytoplasmic stain for Hey-1; b) resected PDAC demonstrating cytoplasmic, but no nuclear, staining; c) resected PDAC demonstrating nuclear expression; d) area of perineural invasion in a resected tumour demonstrating cytoplasmic staining; e) unresectable tumour demonstrating cytoplasmic and positive nuclear expression of HEY-1; f) peritoneal metastases demonstrating cytoplasmic and nuclear staining. (Original magnification 20x, except a and inset 40x).