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Morphology and viability of hBMSCs seeded in BC (a–a2), BC/Gel (b–b2), BC/PA/Gel (c–c2), and BC/PA/Gel/HAp (d–d2) scaffolds for 1 day by SEM and 3 days by live/dead staining. Original magnification: 2000× (a–d), 4000× (a1–d1), and 200× (a2–d2). Live and dead cells were stained with green and red, respectively. Reproduced with permission from [143]. Elsevier, 2017.
