Fig. 4.

Printability of TGM inks in different bath concentrations. (A–B) Macroscopic images of four-layered scaffolds (left) and microscopic images of two-layered scaffolds (right) printed with 27G (A) and 32G (B) nozzles. (C–F) Fiber diameter, Pr score, shape uniformity, and area uniformity of ink and bath combinations printed with a 27G nozzle. (G–J) Fiber diameter, Pr score, shape uniformity, and area uniformity of ink and bath combinations printed with a 32G nozzle. Groups with a shared letter are not significantly different from each other. Images were selected as closest to mean in fiber diameter and Pr score. Scale bars in macroscopic images are equal to 1 mm. Scale bars in microscopic images are equal to 250 μm. Dotted lines on graphs represent (C,G) layer height for that nozzle size and (D,H) ideal Pr score of 1.0. Significance was determined as p < 0.05. n = 5 for all groups.