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International Journal of Bioprinting 3D-printed variable stiffness scaffolds

Figure 5. Morphology of scaffolds for in vitro cell study (A) Images of PCL 3D-printed scaffold infiltrated with ECM like hydrogels (A, i) GelMA, (A, ii)
GelMA/CS/HA, and (A, iii) GelMA/CS/HAMA. Scale bars: 1 mm. (B) Effect of pre-freeze temperature on the internal pore structure of GelMA/GAG
hydrogels. Scale bars: 500 µm. (C) Effect of pre-freeze temperature on the pore size of GelMA-based hydrogels. # denotes statistically significant differences
between groups. $ denotes a statistically significant difference compared to GelMA/CS/HA under the same condition. Abbreviations: CS: Chondroitin
sulfate; GelMA: Gelatin methacryloyl; HA: Hyaluronic acid; HAMA: Methacrylated hyaluronic acid.

Volume 10 Issue 4 (2024) 503 doi: 10.36922/ijb.3784