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. 2020 Feb 27;11:1103. doi: 10.1038/s41467-020-14825-9

Fig. 3. Film thickness of model systems and lung extracts.

Fig. 3

AFM 3D height images and cross-sectional profiles of a healthy model systems composed of 3:1 DPPC:DOPG, scan size 4 μm × 4 μm, b diseased model system consisting of 3:1 DPPC:DOPG with addition of cardiolipin and Ca2+, scan size 8 μm × 8 μm, c healthy bovine lipid–protein extract surfactant (BLES), scan size 11 μm x 11 μm, and d diseased BLES with cardiolipin and Ca2+. Blue arrows display scanning directions of profiles, scan size 10 μm × 10 μm.