Fig. 7. GFP-Apg16L is present on isolation membranes. ES cells stably expressing
GFP-Apg16L were cultured in Hanks' solution for 2 hours and then fixed with 4%
paraformaldehyde. The localization of GFP-Apg16L was examined by
silver-enhanced immunogold electron microscopy using an anti-GFP antibody.
(A,B) Isolation membranes at very early stages. (C) Cup-shaped isolation
membrane. (D) Autophagosome. Bar, 1 µm.