{TAIL ~ A method} 4 wherein {HEAD ~ the insoluble fibrous protein} is selected from the group consisting of collagen, keratin, fibrin, elastin, and mixtures thereof 
{ TAIL ~ A method } 4 wherein { HEAD ~ the insoluble fibrous protein } is selected from the group consisting of collagen , keratin , fibrin , elastin , and mixtures thereof
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH