| 1. | The zippy ads use fanciful scenarios to describe various Tracer attributes.
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| 2. | Then Tracer begins feeding information on the traitor's identity.
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| 3. | Tracers that were straining to knock him out of the sky.
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| 4. | Gun batteries on rooftops sent tracer shells streaking across the sky.
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| 5. | Tracers reveal that a substance has been used and artificially ingested.
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| 6. | The glow of the tracer guides surgeons to the correct node.
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| 7. | Iraqis celebrating in Baghdad sent tracer bullets flashing across the sky.
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| 8. | An imaging tracer made with radionuclides is called a radioactive tracer.
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| 9. | An imaging tracer made with radionuclides is called a radioactive tracer.
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| 10. | It is widely used as a fluorescent tracer for many applications.
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