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Infection of DLD-1 cells by EV71. EV71 infected and replicated in DLD-1 cells within 4 hours (4 H), and rapidly replicated in 24 hours (24 H) (A). The replication of EV71 in DLD-1 cells could be visible by specific antibody directed immunofluorescent staining (B). In contrast, EV71 did not infect K562 myeloid cells in 24 hours (C). Data presented are calculated from 4 experiments.
