Fig. 6. The C-terminal region of Xp54 acts as a cytoplasmic retention signal in HeLa cells. Cells expressing T7-p54, T7-CT and T7-V/CT were incubated for four hours in the presence or absence of 5 nM LMB. Fluorescence images were obtained by immunostaining with anti-T7 IgG and FITC-conjugated anti-mouse IgG.