Assertion: radiation | /r/HasProperty | directed area
Facets:
value: at the prostate
type: LOCATION
value: by putting materials
type: MANNER
Source sentences:
text: Radiation can be produced from a machine outside the body (external radiation) and directed right at the prostate or by putting materials that produce radiation (radioisotopes) through thin plastic tubes into the cancer -infected area (internal radiation or brachytherapy).