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