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. Author manuscript; available in PMC: 2020 Oct 1.
Published in final edited form as: Nanomedicine. 2019 Jul 23;21:102052. doi: 10.1016/j.nano.2019.102052

Figure 2.

Figure 2.

Cell viability evaluation by Trypan Blue staining. PC-12 cells treated and untreated by NGF-SPIO-Au NPs were irradiated with 30-minutes of LED light at 3 different intensities: 1.90, 1.44 and 1.09 mW/cm2 daily for the (A): 1 day, (B): 3 days and (C): 5 days of incubation, (D) the time and concentration dependency of cell viablity for cells exposed to 30 minutes of LED light (1.90 mW/cm2) each day. *p < 0.05; **p < 0.01; ***p < 0.001, ****p < 0.0001.