Surfaces modified with RGDC were shown to be effective for osteoblast binding and proliferation. RGDC binds via its sulfhydryl moiety to gold particles and gold-coated implants increasing their biocompatability. Gawalt, ES; et al., Langmuir, 19, 200, (2003); Danahy, MP; et al., Langmuir, 20, 5333, (2004); Heijink, A; et al., Clin. Orthop. Relat. Res., 466, 977, (2008).