Application of accelerator mass spectrometry in studies of DNA adducts

Most chemical carcinogens,after intake,or after metabolic activation,can form covalent modifications of DNA(DNA adducts).DNA adducts formation induced by carcinogenic chemicals reflects exposure and is directly related to tumor formation.DNA adduct is a valid indicator of early key stage of carcinogenesis.Accelarator mass spectrometry (AMS) is a relatively new nuclear technique,has been developed for the detection of DNA adduct with great detection sensitivity.This powerful application allows studying molecular effects at the low-dose carcinogen exposure.