excision repair of uv damage in human cells was measured by the incorporation of new bases into dna after exposure to uv light and variety of other carcinogens including x-rays , furocoumarins plus 360 nm light ( 8-methoxypsoralen ( 8-mop ) , 4'-aminomethyl 4,5',8-trimethylpsoralen hydrochloride ( amt ) and angelicin ) , methyl methanesulfonate ( mms ) , dimethyl sulfate ( dms ) and n-methyl-n'-nitro-n-nitrosoguanidine ( mnng ) .
C0016859
furocoumarins
C0025684
8-methoxypsoralen