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Figure 5: Cholangiocarcinoma. (a) Clusters of small dark cells (Romanowsky smear, ×40); (b) (Papanicolaou smear, ×20); (c) Cell block with glandular clusters of cuboidal cells (H and E, ×20); (d) Strong staining for cytokeratin-7 (×20)

Figure 5: Cholangiocarcinoma. (a) Clusters of small dark cells (Romanowsky smear, ×40); (b) (Papanicolaou smear, ×20); (c) Cell block with glandular clusters of cuboidal cells (H and E, ×20); (d) Strong staining for cytokeratin-7 (×20)