The object of the invention is to seek and develop {HEAD ~ an oral preparation} of {TAIL ~ protein} or polypeptide drugs especially insulin 
of
The object of the invention is to seek and develop { HEAD ~ an oral preparation } of { TAIL ~ protein } or polypeptide drugs especially insulin
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH