Interfacial tension profiles of a droplet of unfractionated WTBslA (0.02 mg·mL−1) in air (black line) and in glyceryl trioctanoate (gray line). (B) A 50-μL droplet of WT-BslA (0.03 mg·mL−1) on highly ordered pyrolytic graphite after 0 (Left) and 30 (Right) min. ( C) A 25-μL droplet of WT-BslA (0.02 mg·mL−1) in air before and after compression. (D) A 40μL droplet of WTBslA (0.2 mg·mL−1) in glyceryl trioctanoate before and after compression.