title: Age response for CHO cells exposed to negative pions.
mesh_terms: D002453:Cell Cycle / Q000187:drug effects; D002460:Cell Line; D002470:Cell Survival / Q000528:radiation effects; D006918:Hydroxyurea / Q000494:pharmacology; D007399:Interphase / Q000528:radiation effects; D011836:Radiation Tolerance; D013997:Time Factors; D014965:X-Rays
chemical_list: D006918:Hydroxyurea