Click on image to view larger version.

Fig. 3. WT NR6 cell adhesion is enhanced through nanoscale RGD clustering even when
average peptide density remains the same. Cell adhesion strengths on most
clustered (5.4 RGD/comb) and least clustered RGD (1.7 RGD/comb) substrates are
compared at three comparable RGD surface densities. (A) 5.4 RGD/comb: 1050
RGD/µm2; 1.7 RGD/comb: 1660 RGD/µm2. (B) 5.4
RGD/comb: 530 RGD/µm2; 1.7 RGD/comb: 830 RGD/µm2.
(C) 5.4 RGD/comb: 260 RGD/µm2; 1.7 RGD/comb: 330
RGD/µm2.