the mechanisms of these processes on cbf , on the intact pfn molecule , or on heparin-binding fragments of pfn have been tested using a heptapeptide ( peptide a ) containing the arg-gly-asp-ser ( rgds ) sequence which recognizes a specific 'receptor ' on the surface of a variety of cells or a control peptide with a single amino acid substitution .
C0007634
cbf
C0699040
surface of