Narrator: This is Science Today. The Lawrence Livermore National Laboratory operates one of a handful of accelerator mass spectrometers in the nation for bioscience research. This powerful tool, called AMS, is used to study the chemical make-up of substances. Lab chemist Bruce Buchholz says they're using AMS to assess absorption of vitamin B12.
Buchholz: This is really the first clinical use of the technology. Most of the other uses or the applications that we've done have been more academic exercises looking at the metabolism of different compounds or absorption or adducts on DNA for causing cancer of different compounds.
Narrator: The researchers are currently looking at absorption of vitamin B12 from beef.
Buchholz: Meat is one of your primary sources of vitamin B12, so another project is producing beef that is intrinsically labeled with vitamin B12 and then looking at the bioavailability of B12 in a food source versus a supplement.
Narrator: For Science Today, I'm Larissa Branin.