title: The oxygen enhancement ratio as measured with HeLa cells and protracted irradiation from 252Cf and 137Cs.
mesh_terms: D002142:Californium; D002587:Cesium Isotopes; D006367:HeLa Cells / Q000528:radiation effects*; D006801:Humans; D010100:Oxygen; D011829:Radiation Dosage; D013679:Technology, Radiologic
chemical_list: D002587:Cesium Isotopes; D002142:Californium; D010100:Oxygen