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International Journal of Implant Dentistry
Fig. 4 | International Journal of Implant Dentistry

Fig. 4

From: Improved response of human gingival fibroblasts to titanium coated with micro-/nano-structured tantalum

Fig. 4

Relative cell viability and proliferation assay. a HGFs cultured on both samples for 24 h were stained with Calcein AM (green) and PI (red), indicating live and dead cells (× 100). b Relative HGF viability rate was detected at 24h based on live/dead cell staining. *p < 0.001 when compared with Ti group. c Relative HGFs proliferation rate on both samples was detected by CCK-8 at 1, 3, 5, and 7 days. *p < 0.0001 when compared with Ti group

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