Background: Cell population-based studies obscure potential phagosomal heterogeneity. Results: We used a dynamic assay to monitor superoxide production in single phagosomes and uncovered variability in NADPH oxidase activity.
Conclusion:The heterogeneity is attributable to variations in local DAG accumulation, which is controlled by DAG kinases. Significance: Heterogeneity in phagosome responsiveness could enable the survival of a fraction of invading microorganisms.
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