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Dynamic surface tension of the Protein A solution at bulk concentrations of 50 μM (○), 25 μM (▵), 10 μM (♦), 5 μM (▾), 0.5 μM (□), 5.0 × 10−2 μM (−), and 5.0 × 10−3 μM (•). In each run, drop images were captured at 30- or 60-s intervals for 2 or 4 h.
