Random three and four {HEAD ~ amino acid copolymers} having {TAIL ~ lengths} of 14 , 35 and 50 amino acid residues are provided 
having
Random three and four { HEAD ~ amino acid copolymers } having { TAIL ~ lengths } of 14 , 35 and 50 amino acid residues are provided
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH