Figure 6—figure supplement 2.

Figure 6—figure supplement 2. Morphologies of presynaptic and postsynaptic assemblies and the distribution of postsynaptic aggregates across the sensory arbor network.

(A,B) The micrographs depict single presynaptic aggregate marked by CTBP in control (A) and in sema7a-/- mutant (B) larvae at 4 dpf. (C,D) The micrographs depict single postsynaptic aggregate marked by MAGUK in control (C) and in sema7a-/- mutant (D) larvae at 4 dpf. (E) A maximal-intensity projection micrograph depicts the sensory arbor network (magenta) and the enrichment of the postsynaptic assemblies (yellow, white arrowhead) near the nodes (cyan arrows). (F) A schematic diagram of the sensory arbor network depicts the enrichment of the MAGUK punctae near the node (cyan arrow). The three-dimensional space surrounding each node was divided into concentric shells of equal volume to measure the distribution of MAGUK-punctae density across the network.