Fig. 4.

Structural MB abnormalities caused by developmental RNAi. (A) Wild type. (B–I) RNAi flies. Expression of UAS-RNAi was induced with OK107, which drives Gal4 in most MB neurons throughout development. MB lobes are visualized with UAS-mCD8::GFP. White arrowheads indicate fused medial lobes (C, D, H, and I). Open arrowheads indicate abnormal β-lobe (B), swollen α-lobe (E), and small α′-lobe (F). Arrows in F and G indicate aberrant γ-lobes. Shown are reconstructions of confocal sections. (Scale bar, 50 μm.)