Table 2

Summary of immunohistochemical staining results in ESCC cell lines and their corresponding primary tissue specimens

Cell linesPrimary tissuesa
HKESC-1HKESC-2T1N1T2N2
Fra-1+++b++++++++++
Neogenin++++++++++++
Id-1+++++++++++++
CDC25B++++++++++++
  • a T, ESCC tumor; N, morphologically normal esophageal epithelium.

  • b Expression: −, no expression; +, <10% cells positive; ++, ≥10% and <50% cells positive; +++, ≥50% cells positive. ++ to +++ was considered as overexpression.