Biomaterials Research Scientist Dr. Victor Roman examines the density of overnight saturated bacterial cultures in a small flask that was used to “seed” larger volumes of cultures in the Air Force Research Laboratory, or AFRL, Synthetic Biology Laboratory in AFRL’s Materials and Manufacturing Directorate, Wright-Patterson Air Force Base, Ohio, May 10, 2023. “Seeding” is the first step in prepping cultures for keratin expression, and the smaller flask contains a bacterial strain engineered to express a particular muskox keratin protein. Culture density is an indicator of healthy bacterial growth, Roman said. (U.S. Air Force photo / Jonathan Taulbee)
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