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Figure S2. Lamp1 is detected on the membrane of recently formed phagosomes that are still at the cell periphery. Lamp1 was detected by immunogold labeling (15 nm gold) on the membrane of a phagosome in close proximity to plasma membrane ruffles in ultrathin cryosections of a Syt VII^+/+ BMM. Z, zymosan particle; PM, plasma membrane. Bars, 400 nm.