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Stress–strain curves of GelMA (5 × 106 cells/mL) for (a) 10% GelMA and (b) 5% GelMA after 24 h, 48 h, and 96 h of incubation (a diamond represents 24 h of incubation, a square represents 48 h of incubation, and a triangle represents 96 h of incubation).
