Fig 1: Immunohistochemical analysis of NKG2D ligand expression in ameloblastoma. Positive controls were as follows: colon cancer tissue for MICA/B, hepatocellular carcinoma tissues for ULBP1 and ULBP2, and placental tissue for ULBP3. There were no cases with strong expression of MICA/B and negative expression of ULBP2 (original magnificaiton×200). Major histocompatibility complex class I chain-related molecules A/B (MICA/B) and UL16-binding proteins (ULBP)