Cobalt and megavoltage therapy.
D003035:Cobalt / Q000627:therapeutic use*; D006801:Humans; D009369:Neoplasms / Q000532:radiotherapy; D055585:Physical Phenomena; D010825:Physics; D011867:Radioisotope Teletherapy; D011882:Radiotherapy, High-Energy; D012867:Skin / Q000528:radiation effects; D013679:Technology, Radiologic
D003035:Cobalt