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At late times postinfection, SFV-infected cells are no longer capable of arsenite-induced SG formation. wt MEFs were infected at low MOI with SFV-b7EGFP. After 8 h, cells were either fixed directly (A) or treated with sodium arsenite for 30 min and then fixed (B). Cells were processed for immunofluorescence using anti TIA-1. Cells containing SGs are indicated with arrowheads. Bar, 50 μm.
