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P.a. blankets A.t. in coculture biofilms. (A and B) Three-dimensional views of P.a. and A.t. wild-type pure-culture flow-cell biofilms. (C and D) Coculture biofilms at 24 and 164 h after inoculation. (Top) An x–y slice close to the attachment surface. (Bottom) Three-dimensional views. Red cells, P.a., green cells, A.t. (Scale bars, 20 μm; 1 unit in 3D view = 13.4 μm.) (E) A quantitative determination of biomass distributions along biofilm depth in a coculture biofilm at 96 h.
