FIG. 1.
R3616 viral replication is variable in cancer cell lines from diverse tumor types. Cells were exposed to 1 PFU/cell of R3616 in serum-free medium for 2 h, after which medium containing virus was removed and fresh medium containing 1% calf serum was added. At 36 h after infection, R3616 viral recovery was determined by standard plaque assay.