The 509th Medical Lab – the behind-the-scenes cure
WHITEMAN AIR FORCE BASE, Mo. -- Staff Sergeant Raul Loyo, 509th Medical Group Laboratory Technician, checks expiration dates on the gram stain equipment, Feb. 20. This equipment used to differentiate bacterial species into two large groups, gram-positive and gram-negative. ( U.S. Air Force photo by Airman 1st Class Keenan Berry) (Released)

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Photo by: Airman st Class Keenan Berry Released |  VIRIN: 130220-F-TQ704-099.JPG