EPHA2 and neoplasm: To establish whether a switchable IgG membrane anchor could be effectively displayed and visualized on the cell surface of CHO cells, CHO‐RS was transiently transfected with expression plasmids encoding a well‐expressed human IgG1 directed against the tumor antigen EphA2 (Jackson et al., 2008; Peng, Oganesyan, Damschroder, Wu, & Dall’Acqua, 2011).