Laval J, Strauss B S
Biochimie. 1985 Mar-Apr;67(3-4):391-2. doi: 10.1016/s0300-9084(85)80086-9.
The induction of proto-oncogens H-ras-1 by nitrosomethylurea (Sukumar et al. (1983), 306, 658-661) is discussed in term of lack of DNA-repair of lesions induced in DNA by this alkylating agent, particularly O6-methylguanine residues and apurinic/apyrimidinic sites.