prov:value
| - wherein, R is O or S, adapted to be covalently attached to an implant surface; I is the implant surface; X is selected from a bond, linear or branched chains of 1 to 30 covalently attached atoms selected from the group consisting of C, N, O, Si or S or other linking atoms, rings of 1 to 20 covalently attached atoms selected from the group consisting of C, N, O, Si or S or other linking atoms and a
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