Figure 3.

(A) Representative fluorescence microscopy images of L929 fibroblasts and MC3T3e1 osteoblasts cultured on PDL-coated 3D-printed PA-12 and positive control (plate) cell culture chambers after 4 days. A graph of MTT assay showing viability of (B) L929 fibroblasts and (C) MC3T3e1 osteoblasts cultured on uncoated, O₂ plasma-treated, PDL- and CLG-coated 3D-printed PA-12, and positive control (plate) cell culture chambers after day 2 and day 4, respectively. * (P < 0.05), ** (P < 0.01) and *** (P < 0.001) denote statistical significance. N.S, Not significant.