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. 2008 Jun 2;92(22):223901. doi: 10.1063/1.2937402

Figure 3.

Figure 3

The inverse of the structure factor S(Q=0) is plotted as a function of DNA concentration (g/ml). A linear fit was performed to derive the second virial coefficient from these data. Dumbbell DNA shows marginal repulsion (A2>0) while weak attraction (A2<0) is observed in semi-dumbbell and ds DNA.