title: Reducing electron contamination of cobalt-60 teletherapy beams.
mesh_terms: D003037:Cobalt Radioisotopes / Q000627:therapeutic use*; D004583:Electrons; D006801:Humans; D011834:Radiation Monitoring / Q000379:methods*; D011867:Radioisotope Teletherapy
chemical_list: D003037:Cobalt Radioisotopes