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(a) Pore size, (b) fiber diameter, and (c) fiber spacing measurements organized by scaffold type (bilayer or gradient descending), layer number (1–6 or 1–8), and HA concentration (0–10 wt%). (n = 4 scaffolds per group, 5 measurements per layer for a total of 20 measurements per datum). Data reported as mean + standard deviation (n = 4).
