title: Letter: Sulfhydryl contents of the radioresistant HeLa cells and their cross resistance to nitrogen mustard.
mesh_terms: D004273:DNA, Neoplasm / Q000032:analysis; D006367:HeLa Cells / Q000032:analysis / Q000187:drug effects / Q000528:radiation effects*; D008466:Mechlorethamine / Q000494:pharmacology*; D011830:Radiation Effects; D013438:Sulfhydryl Compounds / Q000032:analysis*
chemical_list: D004273:DNA, Neoplasm; D013438:Sulfhydryl Compounds; D008466:Mechlorethamine