SRL for [reirradiated]: Based on the wavelength dependence of dimer formation and reversal , they irradiated transforming DNA isolated from Hemophilus influenzae at 280 nm , assayed for transforming activity , then [reirradiated] the DNA at 240 nm , and again assayed for transformation .
ARG-M-ADV: Based on the wavelength dependence of dimer formation and reversal | ARG-0: they | ARG-M-TMP: then | ARG-1: transforming DNA isolated from Hemophilus influenzae at 280 nm