texts: Why? </s> <s> Because by the second day of incubation any cells that have undergone reversion mutation give rise to revertant colonies -- like rats leaving a sinking ship.  The ship sinks. </s> <s> What about E.M.S. recombination?
labels: We've already tried it -- ethyl methane sulfonate is an alkylating agent and a potent mutagen -- it creates a virus so lethal the subject was destroyed before we left the table.