| http://www.w3.org/ns/prov#value | - A polypeptide having a biologically active sequence exhibiting cell attachment activity having less than about 30 amino acids which exhibits cell attachment activity resulting substantially from the peptide X-Arg-Gly-Asp-R-Y wherein X is H or at least one amino acid and Y is OH or at least one amino acid, and R is an amino acid selected from Thr or Cys.
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