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Comparison of morphology change of various copolymer matrices before and after immersion in PBS for 10 weeks. (a) PHEMA10-g-PLLA2, 0 week; (b) PHEMA10-g-PLLA2, 10 weeks; (c) PHEMA10-g-PLLA10, 0 week; (d) PHEMA10-g-PLLA10, 10 weeks; (e) PHEMA10-g-PLLA20, 0 week; (f) PHEMA10-g-PLLA10, 10 weeks; (g) PHEMA10-g-PLLA10/PLLA (50/50), 0 week; (h) PHEMA10-g-PLLA10/PLLA (50/50), 10 weeks.
