Figure 2.

(a) HEp-2 cells were incubated with RSV in the presence of compounds 3b, 5a, and 6b at 4 °C for 1 h and then washed to remove unbound virus and inhibitor (A), or washed to remove unbound virus and compounds added before the temperature was shifted to 37 °C (B). (b) Inhibition of RSV infection by the test compounds under experimental conditions (A) and (B).