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Representative images of plasma-derived hydrogels after 72 h of incubation at 37 °C under SEM with (A) 1.2 mg/mL fibrin concentration at 5000×, (B) 1.2 mg/mL fibrin concentration at 20,000×, (C) 2.4 mg/mL fibrin concentration at 5000×, and (D) 2.4 mg/mL fibrin concentration at 20,000×.
