Large image view: Tracing marijuana to its roots
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ÃÛÌÒÓ°Ïñ photo by Marmian Grimes
Tim Howe, a research technician at the ÃÛÌÒÓ°Ïñ Stable Isotope Facility, demonstrates how to load sample capsules into an autosampler tray. The samples are then combusted for testing in a stable isotope ratio mass spectrometer.