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SEM images of neat Neusilin® US2 at 1000× (a), 2300× (b) and 5500× (c) magnifications and 1:1 w/w mixture of Neusilin® US2 with PEG-35 castor oil (Cremophor® EL) at 1000× (d), 3000× (e) and 6500× (f) magnifications. Microscope scales are shown with the images for comparison of dimensions.
