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Mean swelling index of hydrogels (FCX1 to FCX9) at pH 1.2 and pH 7.4. (A) Swelling index of hydrogels formulations FCX at pH 1.2. (B) Swelling index of hydrogels formulations at pH 7.4. (C) Mean swelling index of hydrogels (FCX1–FCX9) at pH 1.2 and pH 7.4.
