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. 2022 Sep 22;16:100438. doi: 10.1016/j.mtbio.2022.100438

Fig. 1.

Fig. 1

Characterization of the nanofibers. (A) Scanning electron microscopy (SEM) images at 10000 ​× ​magnification; the inserts are water contact angle images. (B) SEM images at 40000 ​× ​magnification, the inserts are transmission electron microscopy images. (C) The histograms show the diameter, porosity, and contact angle of electrospun fibers. (D) Images of PLGA-rhodamine/GEL-calcein taken using a confocal microscope. (E) In vitro cumulative drug release profiles of PLGA-TP/GEL-APR nanofibers. (F) Fluorescence microscopy images of BMSCs cultured on nanofibers for 3 days in vitro and quantitative analysis (n ​= ​3).