dna endonuclease activities from the chromatin of normal human and xeroderma pigmentosum , complementation group a ( xpa ) , lymphoblastoid cells were examined on dna treated with 8-methoxypsoralen ( 8-mop ) or 4,5',8-trimethylpsoralen ( tmp ) plus long wavelength ultraviolet ( uva ) light , which produce monoadducts and dna interstrand cross-links , and angelicin plus uva light , which produces mainly monoadducts .
C0043346
xeroderma
C0025684
8-methoxypsoralen