FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term projection neuron ID (Ontology) FBbt:00007392 (Fly Anatomy)
Definition An interneuron that projects from some primary sensory neuropil (e.g. the antennal lobe) to a higher neuropil region.
Also Known As "2nd-order PN" ; "PN" ; "second order projection neuron"
Comment
Links to External Ontologies
VFB:FBbt_00007392
Annotations
Records annotated with this term OR any of its CHILD TERMS
Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN      19
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       9
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       1
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN       9
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Alleles  Genes Insertions Constructs
 projection neuron (all annotations which use CV term, excluding "NOT" statements)      19      1      1     11     12
     projection neuron | adult stage       4       --       --       --       2
     projection neuron | adult stage | decreased number | somatic clone       1       --       --       --       --
     projection neuron | larval stage       2       --       --       --       2
     projection neuron | somatic clone       2       --       --       --       --
Spanning Tree (Parents/Children)
Only view relationship: 
  interneuron
   |__input/output neuron
       |__projection neuron  1709 rec.
           |__adult amulet subesophageal neuron 3 rec.
           |__adult antennal mechanosensory and motor center projection neuron 93 rec.
           |   |__adult AMMC-PN1 lateral horn input neuron
           |   |__adult lobula tangential neuron LT36
           |   |__adult lobula visual centrifugal neuron LoVC14
           |   |__adult lobula visual centrifugal neuron LoVC21
           |   |__adult lobula visual projection neuron LoVP101
           |   |__adult medulla visual centrifugal neuron MeVC1
           |   |__adult medulla visual centrifugal neuron MeVC25
           |   |__adult visual centrifugal neuron OLVC2
           |   |__antennal mechanosensory and motor center A projection neuron(+) 44 rec.
           |   |__antennal mechanosensory and motor center AMMC PN2 projection neuron 1 rec.
           |   |__antennal mechanosensory and motor center AMMC PN3 projection neuron 2 rec.
           |   |__antennal mechanosensory and motor center B projection neuron(+) 81 rec.
           |__adult AVLP_pr03 projection neuron
           |__adult AVLP_pr06 projection neuron
           |__adult AVLP_pr07 projection neuron
           |__adult AVLP_pr08 projection neuron
           |__adult AVLP_pr09 projection neuron
           |__adult AVLP_pr10 projection neuron
           |__adult AVLP_pr13 projection neuron
           |__adult AVLP_pr14 projection neuron
           |__adult AVLP_pr15 projection neuron
           |__adult AVLP_pr16 projection neuron
           |__adult AVLP_pr17 projection neuron
           |__adult AVLP_pr19 projection neuron
           |__adult AVLP_pr20 projection neuron
           |__adult AVLP_pr21 projection neuron
           |__adult AVLP_pr25 projection neuron
           |__adult AVLP_pr26 projection neuron
           |__adult AVLP_pr27 projection neuron
           |__adult AVLP_pr28 projection neuron
           |__adult AVLP_pr29 projection neuron
           |__adult AVLP_pr30 projection neuron
           |__adult AVLP_pr33 projection neuron
           |__adult AVLP_pr34 projection neuron
           |__adult AVLP_pr37 projection neuron
           |__adult AVLP_pr38 projection neuron
           |__adult basket subesophageal neuron 4 rec.
           |__adult brontosaraus subesophageal neuron 3 rec.
           |__adult cowboy subesophageal neuron 6 rec.
           |__adult crab subesophageal neuron 7 rec.
           |__adult earmuff subesophageal neuron 3 rec.
           |   |__adult CB0653 neuron
           |__adult eiffel subesophageal neuron 5 rec.
           |__adult fruitless aDT-h neuron 22 rec.
           |__adult fruitless aSG7 neuron 19 rec.
           |__adult fruitless pSG1 neuron 8 rec.
           |__adult gallinule subesophageal neuron 17 rec.
           |__adult gazebo subesophageal neuron 3 rec.
           |__adult GNG-Central-PN1 lateral horn input neuron
           |__adult GNG-lALT-PN1 lateral horn input neuron
           |__adult GNG-mALT-PN1 lateral horn input neuron
           |__adult GNG-PN1 lateral horn input neuron 3 rec.
           |__adult GNG-t3ALT-PN1 lateral horn input neuron
           |__adult hydrangea subesophageal neuron 11 rec.
           |__adult IB_pr01 projection neuron
           |__adult IC/SPS_pr01 projection neuron
           |__adult IPS_pr03 projection neuron
           |__adult kelp subesophageal neuron 17 rec.
           |   |__adult CB0212 neuron
           |   |__adult CB0262 neuron
           |__adult landslide subesophageal neuron 3 rec.
           |__adult mandala subesophageal neuron 5 rec.
           |__adult meteor subesophageal neuron 8 rec.
           |__adult peacock subesophageal neuron 8 rec.
           |__adult peafowl subesophageal neuron 6 rec.
           |__adult peahen subesophageal neuron 4 rec.
           |__adult PLP-PN1 lateral horn input neuron 9 rec.
           |__adult PLP_pr01 projection neuron
           |__adult PLP_pr02 projection neuron
           |__adult PVLP_pr02 projection neuron
           |__adult PVLP_pr04 projection neuron
           |__adult SAD/AMMC_pr01 projection neuron
           |__adult sensory system ascending secondary interneuron
           |   |__haltere campaniform sensillum secondary interneuron
           |   |__leg chordotonal organ secondary interneuron
           |   |__leg mechanosensory bristle secondary interneuron
           |   |__wing campaniform sensillum secondary interneuron
           |__adult SIP_pr01 projection neuron
           |__adult SLP_pr01 projection neuron
           |__adult SMP_pr01 projection neuron
           |__adult sullivan subesophageal neuron 7 rec.
           |__adult tophat subesophageal neuron 8 rec.
           |   |__adult anterior ventrolateral protocerebrum neuron 447
           |__adult trogon subesophageal neuron 12 rec.
           |__adult turner subesophageal neuron 6 rec.
           |   |__adult clamp neuron 114
           |__adult VNC-PN1 lateral horn input neuron 6 rec.
           |__adult weaver subesophageal neuron 3 rec.
           |__adult WED_pr03 projection neuron
           |__antennal grooming brain interneuron 1 7 rec.
           |__antennal grooming brain interneuron 2 7 rec.
           |__antennal lobe projection neuron 405 rec.
           |   |__adult antennal lobe projection neuron(+) 366 rec.
           |   |__antennal lobe projection neuron adPN(+) 160 rec.
           |   |__antennal lobe projection neuron of ALl1 lineage(+) 87 rec.
           |   |__antennal lobe projection neuron to mushroom body(+) 200 rec.
           |   |__antennal lobe projection neuron vPN(+) 62 rec.
           |   |__bilateral antennal lobe projection neuron(+) 36 rec.
           |   |__larval antennal lobe projection neuron(+) 4 rec.
           |   |__multiglomerular antennal lobe projection neuron(+) 41 rec.
           |   |__uniglomerular antennal lobe projection neuron(+) 223 rec.
           |   |__unilateral antennal lobe projection neuron(+) 66 rec.
           |__antennal mechanosensory and motor center AMMC Bi4 neuron 1 rec.
           |__antennal mechanosensory and motor center AMMC Bi8 neuron 1 rec.
           |__antennal mechanosensory and motor center AMMC-AL1 projection neuron
           |__antennal mechanosensory and motor center AMMC-VLP projection neuron 1 rec.
           |   |__antennal mechanosensory and motor center AMMC-VLP1 projection neuron
           |   |__antennal mechanosensory and motor center AMMC-VLP2 projection neuron
           |   |__antennal mechanosensory and motor center AMMC-VLP3 projection neuron
           |   |__antennal mechanosensory and motor center AMMC-VLP5 projection neuron
           |   |__antennal mechanosensory and motor center AMMC-VLP7 projection neuron 1 rec.
           |__descending neuron of the gnathal ganglion DNg30 20 rec.
           |__gustatory projection neuron 32 rec.
           |   |__adult gustatory projection neuron(+) 32 rec.
           |   |__larval gustatory projection neuron(+)
           |__hygrosensory projection neuron 15 rec.
           |   |__adult antennal lobe projection neuron VL1(+) 9 rec.
           |   |__adult antennal lobe projection neuron VP1d il2PN
           |   |__adult antennal lobe projection neuron VP1m l2PN
           |   |__adult antennal lobe projection neuron VP1m+VP5 ilPN 2 rec.
           |   |__adult antennal lobe projection neuron VP4 vPN
           |   |__adult antennal lobe projection neuron VP4+ vPN 2 rec.
           |   |__adult antennal lobe projection neuron VP5 l2PN
           |   |__adult uniglomerular projection neuron VP5+SEZ adPN 2 rec.
           |__larval A08j1 neuron
           |   |__larval abdominal 1 A08j1 neuron
           |__larval A08x neuron
           |   |__larval abdominal 1 A08x neuron
           |__larval A09e neuron 4 rec.
           |   |__larval abdominal 3 A09e neuron 4 rec.
           |   |__larval abdominal 4 A09e neuron 4 rec.
           |   |__larval abdominal 5 A09e neuron
           |__larval gut internal state projection neuron
           |__larval recliner neuron 3 rec.
           |__larval respiratory state projection neuron
           |__mechanosensory projection neuron 86 rec.
           |   |__adult mechanosensory projection neuron(+) 83 rec.
           |   |__larval mechanosensory projection neuron(+) 3 rec.
           |__nociceptive projection neuron 12 rec.
           |   |__adult nociceptive projection neuron
           |   |__larval nociceptive projection neuron(+) 12 rec.
           |__ocellar ganglion interneuron
           |   |__ocellar ganglion interneuron type 01(+)
           |   |__ocellar ganglion interneuron type 02
           |__olfactory projection neuron 205 rec.
           |   |__adult olfactory projection neuron(+) 203 rec.
           |   |__larval olfactory projection neuron(+) 4 rec.
           |__proprioceptive projection neuron
           |   |__adult proprioceptive projection neuron
           |   |__larval proprioceptive projection neuron
           |__subesophageal calycal tract neuron 1 1 rec.
           |__subesophageal calycal tract neuron 2 1 rec.
           |__thermosensory projection neuron 33 rec.
           |   |__adult thermosensory projection neuron(+) 31 rec.
           |   |__larval thermosensory projection neuron(+)
           |__visual projection neuron 877 rec.
           |   |__adult visual projection neuron(+) 859 rec.
           |   |__larval visual projection interneuron(+) 25 rec.
           |__wedge projection neuron 94 rec.
               |__adult anterior ventrolateral protocerebrum neuron 391
               |__adult CB0802 neuron
               |__adult CB2848 neuron
               |__adult lobula tangential neuron LT36
               |__adult lobula tangential neuron LT37
               |__adult lobula tangential neuron LT39
               |__adult lobula tangential neuron LT40
               |__adult lobula tangential neuron LT41
               |__adult lobula tangential neuron LT42
               |__adult lobula tangential neuron LT47
               |__adult lobula visual centrifugal neuron LoVC14
               |__adult lobula visual centrifugal neuron LoVC20
               |__adult lobula visual centrifugal neuron LoVC21
               |__adult lobula visual projection neuron LoVP49
               |__adult lobula visual projection neuron LoVP53
               |__adult lobula visual projection neuron LoVP54
               |__adult lobula visual projection neuron LoVP90c
               |__adult lobula visual projection neuron LoVP101
               |__adult medulla visual centrifugal neuron MeVC1
               |__adult medulla visual centrifugal neuron MeVC7b
               |__adult medulla visual centrifugal neuron MeVC25
               |__adult medulla visual projection neuron MeVP18
               |__adult medulla visual projection neuron MeVP24
               |__adult medulla visual projection neuron MeVP53
               |__adult multiglomerular antennal lobe projection neuron type 19 l2PN
               |__adult posterior lateral protocerebrum neuron 031
               |__adult posterior lateral protocerebrum neuron 098
               |__adult posterior lateral protocerebrum neuron 167
               |__adult visual centrifugal neuron OLVC2
               |__adult wedge projection neuron 1 24 rec.
               |__adult wedge projection neuron 2 3 rec.
               |__adult wedge projection neuron 3 18 rec.
               |__adult wedge projection neuron 4 3 rec.
               |__adult wedge projection neuron 5 7 rec.
               |__adult wedge projection neuron 6 3 rec.
               |__adult wedge projection neuron 8
               |__adult wedge projection neuron 9
               |__adult wedge projection neuron 10A
               |__adult wedge projection neuron 10B
               |__adult wedge projection neuron 11
               |__adult wedge projection neuron 12
               |__adult wedge projection neuron 16
               |__adult wedge projection neuron 18
               |__antennal mechanosensory and motor center A1 projection neuron 10 rec.
               |__antennal mechanosensory and motor center AMMC Bb1 neuron 3 rec.
               |__antennal mechanosensory and motor center AMMC Bb4 neuron 1 rec.
               |__antennal mechanosensory and motor center AMMC Bi6 neuron 1 rec.
               |__antennal mechanosensory and motor center AMMC Bi9 neuron 5 rec.
               |__antennal mechanosensory and motor center AMMC Bi10 neuron 1 rec.
               |__descending neuron of the posterior brain DNp11 16 rec.
               |__lobula plate tangential neuron Hx 2 rec.
               |__wind sensitive wedge projection neuron(+)
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VFB:FBbt_00007392