develops from external sensory organ precursor cell external sensory organ precursor cell I external sensory organ precursor cell IIc 2010-01-08T05:50:50Z pIIc Characterized in developing olfactory sense organs of the antenna (Sen et al., 2003). May not be applicable to other external sense organs. Not clear how this fits with subsequent olfactory sensillum development models, as these cells are not mentioned in Chai et al., 2019 (FBrf0241429) or Endo et al., 2012 (FBrf0217319). Second-order precursor cell of multi-innervated external sense organs. It divides to produce only neuronal progeny. SOPIIc fly_anatomy.ontology FBbt:00100023