Fig. 4.

Ifb-Fwd and Ifb-Bwd share postsynaptic target neurons. a–d Dorsal views of the reconstructed Ifb-Fwd and Ifb-Bwd and their postsynaptic targets A01c and A03g. Black horizontal lines indicate the midlines. e Downstream neurons shared by Ifb-Fwd and Ifb-Bwd (excitatory neurons, orange; inhibitory neurons, blue; neurotransmitter unknown, gray). We assigned their neurotransmitter phenotype as follows: A01c was reported to be cholinergic²⁰. A14b is putatively GABAergic since it belongs to a lineage of GABAergic neurons²⁰. A03g is shown to be cholinergic in (f). The neurotransmitter phenotype of the other two neurons (A07c4 and A07f2) could not be tested due to lack of specific Gal4 lines. The widths of arrows indicate synapse numbers. f Dorsal view of A03g (R36G02>mCD8::GFP) counterstained for ChAT (n = 5 larvae). Scale bar, 5 µm