Fig. 3. A reduced number of actin-positive post lysosomes were observed in lvsB mutant cells. (A) Post lysosomes were identified by immunofluorescence as p80-positive and actin-positive compartments (arrows). Bars, 5 µm. (B) Fewer actin- and p80-positive vacuoles were observed in lvsB mutant cells. The means + s.e.m. of three independent experiments are indicated. At least 30 cells were analyzed for each cell type in each experiment.