Hydrophilic regions of the envelope protein were identified by {HEAD ~ the technique} of {TAIL ~ Rose} and Roy  
Hydrophilic regions of the envelope protein were identified by { HEAD ~ the technique } of { TAIL ~ Rose } and Roy
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH