Microbiologist Amy Charkowski and graduate student Abdulah Harris observe the display of a confocal microscope being used to examine an alfalfa sprout root that has been experimentally contaminated with Salmonella. The microbes show up green or blue on the computer screen.
Scott Bauer, USDA Agricultural Research Service. (Byline on <a rel="nofollow" class="external free" href="https://www.aphis.usda.gov/aphis/resources/pests-diseases/hungry-pests/the-threat/med-fruit-fly/med-fruit-fly">https://www.aphis.usda.gov/aphis/resources/pests-diseases/hungry-pests/the-threat/med-fruit-fly/med-fruit-fly</a> makes it clear that Bauer works for USDA ARS.)
2000-08-01
<a rel="nofollow" class="external text" href="https://www.ars.usda.gov/oc/images/photos/aug00/k8987-1/">Image Number K8987-1</a>