FIG. 1.
One-step growth analysis. At the indicated times postinfection, cells were scraped into the medium, virus was released by freeze-thawing, and the virus titer was determined by plaque assay on HeLa cells. (A) Growth of HRV16 and 16/L in ICAM-L cells infected with 10 PFU/cell; (B) growth of HRV16 and 16/L in HeLa cells infected with 10 PFU/cell.