Fig. 5.

(A) Representative 3D images of encapsulated cells inside GelMA-O5 (I) and GelMA-O5/rGO (II) hydrogels hydrogel network after 3 days of encapsulation (The green and red dots mean living and dead cells, respectively). (B) Proliferation of encapsulated UCMSCs inside GelMA-O5 and GelMA-O5/rGO hydrogels by CCK-8 assay. (C) Representative 3D images of encapsulated cells inside GelMA-O5/rGO hydrogel network after 1, 3 and 5 days of encapsulation. (D) Cell morphology of Umbilical cord mesenchymal stem cells (UCMSCs) in GelMA-O5 hydrogel. Phalloidin-TRITC and DAPI were used to stain actin filaments (F-actin) and cell nuclei, respectively. (E) Cell morphology of encapsulated UCMSCs inside GelMA-O5/rGO hydrogel. (For interpretation of the references to color in this figure legend, the reader is referred to the Web version of this article.)