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High magnification scanning electron micrograph of a 16 h/160 °C PGS ALH scaffold demonstrating evidence of micropores ((a) unpublished image from studies presented in Engelmayr et al., 2008). Scale bar = 50 μm. For comparison, a representative scanning electron micrograph of a 7.5 h/160 °C PGS ALH scaffold is presented (b). Scale bar = 300 μm.
