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. 2011 Nov 29;6(11):e27572. doi: 10.1371/journal.pone.0027572

Figure 6. Biophysical characterization of DOPE/SPM monolayers containing cholesterol and enantiomeric cholesterol, showing that both cholesterol enantiomers have a similar influence on the biophysical properties of DOPE/SPM monolayers.

Figure 6

(A) Isotherms of lipid monolayers of DOPE/SPM and DOPE/SPM with 20% or 40% nat-CHS and ent-CHS. Monolayers were transferred onto mica at a surface pressure of 30 mN/m and imaged with atomic force microscopy. AFM images are shown for lipid monolayers of: (B) DOPE/SPM, (C) DOPE/SPM with 20% ent-CHS), (D) DOPE/SPM with 40% ent-CHS (E), DOPE/SPM with 20% nat-CHS, and (F) DOPE/SPM with 40% nat-CHS. The bar in each image is 2 µm.