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Fig. 4 | Biomaterials Research

Fig. 4

From: Size-controlled human adipose-derived stem cell spheroids hybridized with single-segmented nanofibers and their effect on viability and stem cell differentiation

Fig. 4

Histological analysis of spheroids and diffusion of fluorescent dye into spheroids. TEM microscopic images of cross-sectioned (a) CS-2 and (b) FS-2 groups, and (c) a high magnification image of the FS group (scale bar: 1 μm and 200 nm, respectively). (N: nucleus; E: empty space; CM: cell membrane; DM: disconnected membrane; F: single segmented fiber; black arrow: polydopamine particle). d Confocal microscope images after Hoechst staining of the CS and FS groups (scale bar: 100 μm). e Quantification of the percentage of stained areas

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