has soma location receives synaptic input in region sends synaptic output to region adult optic lobe neuron medulla layer M9 proximal medullary amacrine neuron proximal medullary amacrine neuron Pm1a Pm1a FBbt:00003834 The neurotransmitter was assessed by co-labelling cells with a Cha-GAL4.7.4 driver (FBtp0014830) and an anti-ChAT antibody (Varija Raghu et al., 2011 - FBrf0212356), though see comment on Pm1. Pre- versus postsynaptic innervation judged by scoring of terminal morphology from figures in Fischbach and Dittrich (1989) as assessed by FlyBrain Neuron DB. FlyBrain_NDB:10110 Pm07 fly_anatomy.ontology VFB:FBbt_00003834 Pm1a Proximal medullary amacrine neuron that enters the proximal surface of the medulla without branching and forms a broad terminal arbor with mixed morphology terminals mainly in medulla layer M9 (Fischbach and Dittrich, 1989). Pm8 cell body rind of adult medulla