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Control cultures of E. coli (left) vs. Cerulean-expressing E. coli (right). Scale bar = 5 μm for all panels. Phase range is –pi to pi. (A,B) Amplitude. (C,D) Phase. (E,F) Dense culture, phase. (G) Control phase, 5 consecutive z planes of a cell positioned end-on. (H) Cerulean phase, 5 consecutive z planes of a cell positioned end-on.
