Fig. 3. Developing cf50^– cells form unusually large structures. Cells were grown on bacteria on agar plates, and as the cells consumed the bacteria they starved and formed fruiting bodies. Slices of agar with fruiting bodies or aggregates were tilted and photographed. The left panel shows the parental Ax2 cells; the center and right panels show examples of the structures formed by cf50^– cells. Bar is 1 mm.

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