wdEx257 [unc-4::3XFLAG::pab-1 + (pSV17) unc-119 minigene]. Animals exhibit slight forward movement defect. Good antibody staining witih anit-FLAG M2 antibody (Sigma). 100% penetrant array. Expressed in all unc-4 neurons. Ectopically expressed in at least one head neuron (dorsal to pharynx, between two bulbs).