(C) Visualization of the different MNs based on Dfd expression in MN2a and the MHE, which is innervated by a FasII positive axon emerging from MN2a (projection A), while the motoneuronal projections from MN3 (projection B) innervates the Dfd-negative MHD located just underneath the MHE (see also B). All MNs are highlighted by yellow circles. 