Existence de “rescue” pour l'activité transformante d'un acide désoxyribonucléique après irradiation X

Abstract

The damages produced by X-rays do not prevent either denaturation or renaturation of DNA. It was possible to prepare hybrid molecules with an X-ray-inactivated DNA carrying a genetic marker (streptomycin resistance) and a wild-type DNA. We have examined the rescue of transforming activity of the irradiated DNA, in respect of the irradiation dose and of the concentration ratio of the two DNA's at the time of the renaturation.