Related to Fig. 1 . (A) shows the representative images of extracellular LAMP1 signal released by TSPAN4-BFP LAMP1-mCherry MEF stable cell line being treated with gradient concentrations of LLOMe (0/1/2/3 mM) for 22 h. The marked regions in the large graphs were enlarged and demonstrated on their right. The scale bars denoted 20 μm for the large-view graphs, 5 μm for the small-view graphs.