part of develops from develops into ventral neurectoderm imaginal disc primordium developing embryonic structure primordium ventral epidermis primordium P2 iVenEp UBERON:6005533 FBbt:00005533 A(n) primordium that develops into some denticle field anlage and some anal pad primordium and some embryonic ventral epidermis and some imaginal disc primordium and some ventral apodeme anlage and some ventral trunk epidermis primordium. It develops from some ventral neurectoderm. fly_anatomy.ontology venEpiP2 embryonic ventral epidermis early extended germ band embryo ventral trunk epidermis primordium anal pad primordium ventral apodeme anlage ventral ectoderm derivative denticle field anlage