title: Effect of prior X-irradiation on ultraviolet light-induced sister-chromatid exchange.
abstract: Induction of sister-chromatid exchanges (SCEs) by ultraviolet light at 2.6 J/m2 in Chinese hamster ovary cells was significantly inhibited by pretreatment with 3 and 5 Gy of X-rays. No inhibition was observed when cells were treated first with ultraviolet light and subsequently X-irradiated with 5 Gy.
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D006224:Cricetinae; D003434:Crossing Over, Genetic / Q000528:radiation effects*; D004307:Dose-Response Relationship, Radiation; D009152:Mutagenicity Tests; D011839:Radiation, Ionizing; D012854:Sister Chromatid Exchange / Q000528:radiation effects*; D014466:Ultraviolet Rays; D014965:X-Rays