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Replication of p6 and p15 viruses. DBT-9 cells were infected with the indicated viruses at an MOI of 0.05 PFU/cell. p6 and p15 viruses of VUSS3, rExoN1, and rExoN3 were derived from VUSS3p5c1, rExoN1p5c1, and rExoN3p5c2, respectively. Supernatant samples were obtained at 0.5, 6, 8, 10, 12, 16, 24, 30, and 36 hpi, and virus titers were determined by plaque assay. Mean titers and standard deviations from duplicate experiments are indicated.
