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Which of the following describes the sequence of events in phagocytosis?

GM-CSF, TNF or PAF activate the phagocyte; Fc or complement receptor binds to immuoglobulin or complement causing the receptors to cluster; RAC1 initiates the actin cytoskeleton to begin formation of the phagolysosome; RAC2 helps complete and stabilize the phagosome; fusion of the granules and phagosome is mediated by the presence of calcium

GM-CSF, TNF or PAF activate the phagocyte; Fc or complement receptor binds to immuoglobulin or complement causing the receptors to cluster; RAC2 initiates the actin cytoskeleton to begin formation of the phagolysosome; RAC1 helps complete and stabilize the phagosome; fusion of the granules and phagosome is mediated by the presence of calcium

GM-CSF, TNF or PAF activate the phagocyte; Fc or complement receptor binds to immuoglobulin or complement causing the receptors to cluster; RAC1 initiates the actin cytoskeleton to begin formation of the phagolysosome; RAC2 helps complete and stabilize the phagosome; fusion of the granules and phagosome is mediated by the presence of iron

”Explanation”