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. Author manuscript; available in PMC: 2021 Dec 23.
Published in final edited form as: Acta Biomater. 2019 Aug 13;99:18–32. doi: 10.1016/j.actbio.2019.08.020

Fig. 3.

Fig. 3.

Poly(propylene fumarate) (PPF) scaffolds with varying pore size for elucidating the effect of shear stress gradients on Ewing’s sarcoma (ES) cells. (A) Schematic representation of experimental approach. (B) Scanning electron micrographs of large, medium, and small pore size regions within PPF scaffolds. (C) Quantification of IGF-1 secretion by ES cells cultured in PPF scaffolds under static and perfusion conditions. Reproduced with permission from [78].