title: Photochemical cross-linking of DNA-RNA helices by psoralen derivatives.
mesh_terms: D001665:Binding Sites; D003374:Coumarins / Q000494:pharmacology*; D004247:DNA / Q000528:radiation effects; D005363:Ficusin / Q000494:pharmacology*; D011564:Furocoumarins; D008854:Microscopy, Electron; D009690:Nucleic Acid Conformation; D009691:Nucleic Acid Denaturation; D009693:Nucleic Acid Hybridization; D010777:Photochemistry; D012313:RNA / Q000528:radiation effects; D014466:Ultraviolet Rays
chemical_list: D003374:Coumarins; D011564:Furocoumarins; D012313:RNA; D004247:DNA; D005363:Ficusin