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Interaction of PHA nanoparticles with pulmonary surfactant-related materials as determined by DLS. (a) Size distributions and (b) correlograms. Materials tested in the absence or presence of PHA NPs included NS (native surfactant); OE (the reconstituted organic extract of pulmonary surfactant); PL, a suspension of the lipid mixture DPPC/POPG 7:3 (w/w); and DPPC multilamellar vesicles. DLS measurements were performed at 25.0 ± 0.1 °C and a lipid/nanomaterial weight ratio of 1:0.33.
