FIG. 7.

Fusion of the L. pneumophila phagosome with lysosomes in human monocyte-derived macrophages as measured by colocalization of the lysosomal marker LAMP-1 with the bacterial vacuole. The single and double asterisks indicate data points that are significantly different (P < 0.02 and P < 0.01, respectively) from those for AA100 at the same time point. Data points and error bars represent the means and standard deviations, respectively, of three separate counts of 30 phagosomes. Results shown are for a typical experiment.