title: Changes in sensitivity of HeLa cells after split doses of x-rays.
mesh_terms: D002470:Cell Survival / Q000528:radiation effects; D006367:HeLa Cells / Q000528:radiation effects*; D006801:Humans; D011829:Radiation Dosage; D011836:Radiation Tolerance; D013997:Time Factors; D014357:Trypsin; D014965:X-Rays
chemical_list: D014357:Trypsin