Printability Optimization of Gelatin-Alginate Bioinks by Cellulose Nanofiber Modification for Potential Meniscus Bioprinting

Figure 3

Bioprinting quality assessment. (a) As the printing temperature raise, gelling properties from over extrusion (30°C) and poor gelling (20°C) of the bioinks were observed. (b) Upper row: top-view images of the printed four-layer structures (trypan blue stained, cross-linked) obtained using a stereoscopic microscope. (c) The spreading ratios of the non-cross-linked fourth layer strands were measured. (d) The pore sizes of the non-cross-linked four-layer structures were measured. (e) SEM analysis of the printed structures. The bioink and rFCs are colored green and fuchsia, respectively.

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