Supervoltage x-ray and the cobalt bomb.
D054042:Bombs; D003035:Cobalt; D003037:Cobalt Radioisotopes; D009369:Neoplasms / Q000628:therapy*; D011878:Radiotherapy; D014965:X-Rays
D003037:Cobalt Radioisotopes; D003035:Cobalt
COBALT/radioactive; NEOPLASMS/therapy; RADIOTHERAPY