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. 2020 Sep 9;18:127. doi: 10.1186/s12951-020-00674-7

Fig. 3.

Fig. 3

Fluorescence confocal laser scanning microscope of CS-miRNA/HA PEM-functionalized MAO surface with Cy3-labeled miRNAs: a the top layer starting to display fluorescence and bi the continuing layers from top to down with an interlayer distance of 400 nm. The fluorescence 3-D images of Cy3-labeled miRNAs on the MAO surfaces before (j) and after (k) 7 days of incubation in cell culture medium at 37 °C