Abstract: . . .  earlier this year for system upgrades or repairs. But the collaboration between Los Alamos and the Institute of Nuclear Research in Troitsk, Russia, helped ensure a reliable source of strontium- 82 for all the cardiac care clinics doing PET imaging. The collaboration is a race around the world against the unrelenting decay-rate of the radioisotope itself: with each passing day, another 3 percent of the valuable material is gone. At the Russian institute, a particle accelerator designed for medium- energy physics experiments is used to irradiate a . . .
. . .  exchange by a normal saline solution and infused directly into a patient. In the bloodstream, rubidium-82 mimics potassium. Because the heart uses a lot of potassium to do its job, it quickly extracts potassium - and rubidium-82 - from the blood. The isotope collects in and around the heart and the PET scan reveals places where rubidium-82 piles up. The rubidium-82 decays quickly, so in about 10 minutes the radioactivity in the patient is essentially gone. Los Alamos first spearheaded a collaboration with the Russian research institute in 1995. The . . .
. . .  L OS A LAMOS M AKES P LUTONIUM P IT P A G E 8 S AFER D RINKING W ATER P A G E 1 0 Dateline: Los Alamos is available on the World Wide Web: http://lib-www.lanl.gov/pubs/dateline.htm LALP-98-1-6 Nonprofit Organization U.S. Postage Paid Albuquerque, NM Permit No. 532 Marion Timm  . . .
. . .  L OS A LAMOS M AKES P LUTONIUM P IT P A G E 8 S AFER D RINKING W ATER P A G E 1 0 Dateline: Los Alamos is available on the World Wide Web: http://lib-www.lanl.gov/pubs/dateline.htm LALP-98-1-6 Nonprofit Organization U.S. Postage Paid Albuquerque, NM Permit No. 532 Marion Timm  . . .
. . .  builds a complementary strand of DNA using the information on each of the original strands. From the two identical copies of double-stranded DNA, four copies are made the same way, then eight, then 16 and so on, taking advantage of exponential duplication quickly resulting in thousands of copies for study. Thus, all the targeted genetic material necessary for a complete analysis can be gained from one or a very few dead bacteria in a sample. Los Alamos researchers have taken PCR to another level of precision. A double PCR strategy increased the sensitivity . . .
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