directly develops from anterior ectoderm derivative neurosecretory cell of brain larval s-LNv Pdf neuron pupal Pdf neuron pupal s-LNv Pdf neuron 2010-07-16T11:32:39Z fly_anatomy.ontology FBbt:00100173 VFB:FBbt_00100173 small PDFMe Pupal s-LNv that expresses Pdf (FBgn0023178). There are four of these per cluster of pupal s-LNv neurons. pupal PDF medulla neuron pupal s-LNv neuron