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Differential interference contrast (DIC), fluorescence, and merged images of wild type human dental pulp cells as a control (no infection) (upper panel), QCXIN-EGFP infected human dental pulp cells (middle panels), and the surviving QCXIN-EGFP-infected human dental pulp cells selected by administration of 1000 μg/ml G418 (lower panels). Scale bar, 100 μm.
