The recombinant human erbB 3 protein shared {HEAD ~ identical electrophoretic mobility} with {TAIL ~ the natural erbB} 3 product expressed in human breast tumor cell lines 
with
The recombinant human erbB 3 protein shared { HEAD ~ identical electrophoretic mobility } with { TAIL ~ the natural erbB } 3 product expressed in human breast tumor cell lines
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH