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. 2016 Jun 15;6:27884. doi: 10.1038/srep27884

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Each sample was dried in vacuum for 6 days. Scale bars represent 5 mm. (a) Control PLGA films. (b) PLGA films irradiated with 800 nm at 1.0 J/cm². (c) PLGA films irradiated with 400 nm at 0.15 J/cm². The scanning speed was 30 μm/s.