title: Differential sensitivity of DNA strand-break-rejoining mechanisms to split doses of x-rays.
mesh_terms: D000818:Animals; D001932:Brain Neoplasms / Q000139:chemically induced; D002460:Cell Line; D002478:Cells, Cultured / Q000528:radiation effects; D002501:Centrifugation, Zonal; D004260:DNA Repair / Q000528:radiation effects*; D004307:Dose-Response Relationship, Radiation; D009374:Neoplasms, Experimental / Q000139:chemically induced; D009607:Nitrosourea Compounds; D011830:Radiation Effects; D051381:Rats; D014965:X-Rays
chemical_list: D009607:Nitrosourea Compounds