Figure 1

EpoR and endogenous Epo expression in two established HNSCC cell lines. a Quantitative polymerase chain reaction (qPCR) and b Western blot analysis demonstrating the expression of EpoR in two established cell lines. c Western blot analysis also indicates UMSCC-10B and UMSCC-22B express moderate levels of endogenous Epo. MCF-7 cells were used as a positive control for EpoR and endogenous Epo expression.