mushroom body calyx FBbt:00003685 main calyx calyx of corpora pedunculata fly_anatomy.ontology CA VFB:FBbt_00003685 calyx calyx of mushroom body A synaptic neuropil domain containing dendrites of Kenyon cells and receiving sensory interneuron afferents, mainly from the antennal lobes (Ito et al., 2014; Saumweber et al., 2018). It is located on the posterior side of the brain, close to the cortex where the cell bodies of the Kenyon cells are located (Lee et al., 1999; Saumweber et al., 2018). The peduncle extends anteriorly from the calyx to the base of the lobes (Ito et al., 2014; Saumweber et al., 2018). synaptic neuropil domain mushroom body neuropil subdivision