| http://www.w3.org/ns/prov#value | - A composition of matter which promotes the attachment of cells to substrate when immobilized on the substrate and consisting essentially of 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, characterized in that it has cell-attachment-promoting activity.
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