antennal lobe glomerulus VP antennal lobe glomerulus VP1 Discernible with Golgi impregnation or CoCl2 backfills (Stocker et al. 1990), but not with nc82/bruchtpilot immunolabelling, leading to it not being represented in antennal lobe maps (Laissue et al., 1999, Couto et al., 2005) or having its position changed (Chou et al., 2010; Yu et al., 2010). According to Chou et al (2010) and Yu et al (2010) glomerulus VP1 is located medially to glomerulus VP2. The VP1 glomerulus corresponds to the target region of the Ir40-expressing olfactory sensory neurons, corresponding to the 'column' (Silbering et al., 2011). Tanaka et al (2012) identifies a new glomerulus, VP4, as another target region of Ir40a-expressing olfactory sensory neurons, which is innervated by different projection neurons to VP1. column glomerulus fly_anatomy.ontology antennal glomerulus VP1 VFB:FBbt_00003927 Ventro-posterior glomerulus of the adult antennal lobe. It is located dorsomedial to glomerulus VP3, dorsoposterior to glomerulus V. Three of these can be distinguished based on innervation patterns of sensory and projection neurons (Marin et al., 2020). FBbt:00003927