Assertion: technetium's isotope | /r/CapableOf | act as light source
Facets:
value: within their bodies
type: LOCATION
Source sentences:
text: An average of 40,000 Americans per day are given a radioactive isotope that acts as a light source within their bodies, illuminating cancerous tumors and heart problems that doctors otherwise couldn’t detect – short of surgery and other procedures that are riskier, more costly and less effective.