Nevertheless on treatment with the positive controls 2NF and 4NQNO which exert their mutagenic effects on Salmonella tester strains in the absence of metabolic activation significantly amplified the frequency of histidine revertants.
2NF, a nitrated polycyclic aromatic hydrocarbon is an environmental pollutant. 2NF is a mutagen and a carcinogen,
primarily targeting the liver, kidney and fore stomach in rats.
2NF-induced DNA adducts were also shown higher levels in the tumor-targeting tissues compared to non-tumor targeting organs (Cui et al., 1999).