Several staining techniques are used to identify cholangiocytes in histological sections:
Hematoxylin and Eosin (H&E) staining highlights the general morphology of cholangiocytes. Periodic Acid-Schiff (PAS) staining can reveal the glycogen content in cholangiocytes. Immunohistochemistry (IHC) using markers such as CK7 and CK19 can specifically identify cholangiocytes.