Fig. 7.
Surface pressure (Π) versus area plots of apoB[37–41] peptide at the TO/W interface derived from the oscillations without (A) and with (B) buffer exchange. A: Without buffer exchange and at equilibrium tension (γeq), a 16 μl triolein drop was oscillated at 16 ± 2 μL, 16 ± 4 μL, and different periods from 8 to 128 s, respectively. The concentration of apoB[37–41] in aqueous phase was 8.6 × 10−8 M. B: After buffer exchange and at the equilibrium tension (γeq), a 16 μl triolein drop was oscillated at 16 ± 2μL, 16 ± 4μL, and different periods from 8 to 128 s, respectively. ApoB[37–41] was 8.6 × 10−8 M in the aqueous phase before buffer exchange and was virtually absent after buffer exchange.