Staff Sgt. Jessica Portilla, 92nd Medical Support Squadron laboratory technician, looks through a microscope at a gram stain slide to determine the presence or absence of bacteria in a urine sample in the lab at Fairchild Air Force Base, Wash., Feb. 8, 2013. The lab tech can go through an average of 75 to 100 blood samples and other specimens daily. (U.S. Air Force photo by Senior Airman Jordan Pollock)
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