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. Author manuscript; available in PMC: 2018 Feb 28.
Published in final edited form as: J Control Release. 2017 Jan 7;248:53–59. doi: 10.1016/j.jconrel.2017.01.008

Fig.1.

Fig.1

(a) TEM images of PEI-(pBMP-2+pFGF-2) nanoplexes prepared at the N/P ratio of 10 (scale bar = 0.5 μm; inset scale bar = 200 nm). (b) SEM images of collagen scaffolds (scale bar = 500 μm).