For instance, {HEAD ~ sonic hedgehog} undergoes {TAIL ~ additional proteolytic processing} to yield two peptides of approximately 19 kDa and 27 kDa, both of which are secreted 
undergoes
For instance , { HEAD ~ sonic hedgehog } undergoes { TAIL ~ additional proteolytic processing } to yield two peptides of approximately 19 kDa and 27 kDa , both of which are secreted
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH