Altered intracellular distribution of mutant Gag proteins. Intracellular distribution of C-terminal eYFP-tagged Gag wt (wt), Gag μgR (μgR) or Gag GR R/A (GR R/A) proteins in HeLa cells 48 h post transfection. Samples were fixed and stained with DAPI. The images show a merged image of the eYFP (green) and the DAPI (red) channel. Scale bar: 10 μm.