Photoreaction of 4', 5'-dihydropsoralen with thymine.
D004247:DNA; D011564:Furocoumarins / Q000528:radiation effects*; D010777:Photochemistry; D013941:Thymine; D014466:Ultraviolet Rays
D011564:Furocoumarins; C005771:4',5'-dihydropsoralen; D004247:DNA; D013941:Thymine