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Swelling properties of various types of scaffold films. Swelling ratio of films in solution with different pH and temperatures. (A) Swelling ratios of films in solutions with different pH values, ie, (a) 5.5, (b) 6.5, and (c) 7.5. (B) Swelling ratios of films in solutions with different temperatures, ie, (a) 27°C, (b) 37°C, and (c) 47°C.
