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These bacterial smears show common E. coli strains that allow unnatural amino acid (Uaas) incorporation at one site only (left side), and an engineered strain that enables the incorporation of Uaas at ...
COLUMBIA, Mo. (AP) -- Gingersnap, a 4-year-old Abyssinian, rolled lazily on the examining table while Dr. Kristina Narfstrom rubbed the cat's cinnamon-colored head. Then, using a special viewer, ...