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radioactive tracer
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English
Wikipedia
has an article on:
radioactive tracer
Wikipedia
radioactive
tracer
(
plural
radioactive tracers
)
(
physics
,
chemistry
,
medicine
)
A radioactive
isotope
which, when
injected
into a
chemically
similar substance, or artificially
attached
to a
biological
or
physical
system, can be
traced
by
radiation
detection
devices.