After a 20-minute break while the radioactive markers decayed, she was handed the dirty towel.

They would bond it with a radioactive marker and have lab animals breathe it in.

The measurement is simple to make, takes place unattended and is non-interfering (e.g. no fluorescent or radioactive markers are needed).

The authorities arrive and release tear gas with what they believe to be a harmless radioactive marker so that any gang members would not escape arrest.

The use of radioactive markers was previously validated by comparison with endogenous lipids.

After the catheter placement, we used a radioactive marker to delineate the catheter position and recording sites.

The introduction of the radioactive marker can either take place in vivo or in vitro.

The probe is a solution of single-stranded DNA of a specific base sequence that's labeled with a radioactive marker.

These monoclonal antibodies are then attached to a dye or a radioactive marker that shows up in scans by medical imaging equipment.

And my ID badge seems to have a radioactive marker embedded in it.