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. 2013 Sep 3;8(9):e73701. doi: 10.1371/journal.pone.0073701

Figure 1. Absorptivity profile for the formation of [Eu(Bn)]+ by the addition of EuCl3 to a solution of Bn in MOPS buffer pH = 7.5.

Figure 1

The numbers in the curves indicate the concentration of EuCl3 in equivalents of Bn.