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Co-development of WT::gfp and WT::gadB cells. 5 × 106 vegetative cells underwent development on agarose plates. For co-development, WT::gfp and WT::gadB cells were mixed in a 1:2 ratio. Images were taken at 6 h. The asterisk denotes one aggregation center, and arrowheads show streaming WT::gfp cells toward the aggregation center. Bar, 1 mm.
