title: Technology in nursing: radiotherapy. 9. Teletherapy.
mesh_terms: D003037:Cobalt Radioisotopes; D005720:Gamma Rays; D006801:Humans; D011867:Radioisotope Teletherapy / Q000295:instrumentation / Q000379:methods*; D014965:X-Rays
chemical_list: D003037:Cobalt Radioisotopes