This invention relates to the prevention of the narrowing of {HEAD ~ tubular walls} of {TAIL ~ an animal} after the tubular walls have been traumatized 
of
This invention relates to the prevention of the narrowing of { HEAD ~ tubular walls } of { TAIL ~ an animal } after the tubular walls have been traumatized
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH