Figure 2.

Replication of the evolved SOS revertant virus in the absence and presence of reducing agent. 100 μl (78 ng CA-p24) of the cell-free culture supernatant of culture X (see the text) was passaged onto 5 × 10⁶ fresh MT-2 T cells in the presence or absence of 0.3 mM BME and virus spread was measured for 10 days.