In {TAIL ~ some embodiments}, {HEAD ~ Ephexin5} comprises at least one peptide bond replacement 
In
In { TAIL ~ some embodiments } , { HEAD ~ Ephexin5 } comprises at least one peptide bond replacement
REL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH