(a-c) Top: fluorescence images of Agm and Agg observed in MEFs from WT and Atg5 KO mice expressing FL (a), or the indicated truncated Sph1 proteins (b-c) treated with lactacystin (12 h) and recovered in basal conditions (serum+). Graphs show the relative fold difference in the number of cells containing either Sph1 Agm (middle) or Agg (bottom). Values are mean+s.e. (n=3). *Significant versus control. 