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Fig. 6. Rac1 is required for dendritic branching of DA neurons in
Drosophila larvae. (A) A wild-type ddaC neuron that elaborates
extensive dendritic arbors. (B,C) Rac1 mutant ddaC neurons with fewer
dendritic branches. (D) An enlarged image of the area indicated by a square in
A. (E) An enlarged image of the area indicated by a square in C. (F)
Statistical analysis of the numbers of terminal dendritic branches for
wild-type (n=15) and Rac1 mutant ddaC neurons (n=7)
(P<0.01). Scale bars: 50 µm.