overlaps develops from receives synaptic input in region mushroom body calyx Kenyon cell mature Kenyon cell mushroom body neuron intrinsic neuron of mushroom body Intrinsic neuron of the mushroom body. They have tightly-packed cell bodies, situated in the rind above the calyx of the mushroom body (Ito et al., 1997). Four short fascicles, one per lineage, extend from the cell bodies of the Kenyon cells into the calyx (Ito et al., 1997). These 4 smaller fascicles converge in the calyx where they arborize and form pre- and post-synaptic terminals (Christiansen et al., 2011), with different Kenyon cells receiving input in different calyx regions/accessory calyces (Tanaka et al., 2008). They emerge from the calyx as a thick axon bundle referred to as the peduncle that bifurcates to innervate the dorsal and medial lobes of the mushroom body (Tanaka et al., 2008). VFB:FBbt_00003686 MB neuron FBbt:00003686 fly_anatomy.ontology KC intrinsic cell of mushroom body CL:0000673 Pre-synaptic terminals were identified using two presynaptic markers (Brp and Dsyd-1) and post-synaptic terminals by labelling a subunit of the acetylcholine receptor (Dalpha7) in genetically labelled Kenyon cells (Christiansen et al., 2011). mushroom body pedunculus neuroblast MBp mushroom body intrinsic neuron anterior ectoderm derivative