Fig. 4
From: Targeted-gene sequencing of an undifferentiated gallbladder carcinoma: a case report
IHC findings of the undifferentiated carcinoma. a Cells in both the tubular and undifferentiated components were stained for AE1/AE3. b Positive immunostaining for CK7 was identified only in the cells of the tubular component. c The cells of the undifferentiated component were “diffuse positive” for Vimentin. d The osteoclast-like giant cells were strongly positive for CD68. Original magnification: × 200