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. 2017 Apr 4;12:2703–2716. doi: 10.2147/IJN.S131602

Figure 6.

Figure 6

Cytotoxic effects on fibroblastic and osteoblastic cells at 2, 4, and 6 days (n=6, mean ± standard deviation).

Notes: (A) Viability of NIH3T3 cells. (B) Viability of MC3T3-E1 cells. (C) LDH activity of NIH3T3 cells. (D) LDH activity of MC3T3-E1 cells: *P<0.05 vs 0 μg/mL Au clusters; #P<0.05 vs 0 μg/mL Au clusters after LED irradiation; P<0.05 vs 5 μg/mL Au clusters; §P<0.05 vs 5 μg/mL Au clusters after LED irradiation; ||P<0.05 vs 50 μg/mL Au clusters after LED irradiation.

Abbreviations: au, arbitrary unit; LDH, lactate dehydrogenase; LED, light-emitting diode.