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(A) hMSC seeded over PLA/HNT 3D printed scaffolds and stained with fluorescein isothiocyanate. Authors reported different stripe widths. (B) Cell counting and orientation degree; the average cell orientation degree was summarized in (C). (D) Results of cell proliferation (CCK-8) for 1, 3 and 8 days. OD stands for “optical density” quantified at 450 nm. Reproduced with permission from [140], Elsevier, 2019.
