Our continuous studies were allowed to achieve {HEAD ~ the long lasting effect} in vivo by conversion of sulfhydryl group into {TAIL ~ disulfide group} 
Our continuous studies were allowed to achieve { HEAD ~ the long lasting effect } in vivo by conversion of sulfhydryl group into { TAIL ~ disulfide group }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL