Fig. 3From: Resected primary mucinous cholangiocarcinoma of the livera Columnar tumor cells with abundant cytoplasmic mucus arranged in papillary or tubular structure (HE staining). Original magnification: × 200 (right) and × 100 (left). b Abundant mucus at extracellular region; tumor cells observed in mucus lakes (HE staining). Original magnification: × 200 (right) and × 100 (left)Back to article page