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. 2019 Aug 19;9:12040. doi: 10.1038/s41598-019-48475-9

Figure 4.

Figure 4

AuNPs synthesized by the cell culture (ccAuNPs) has cytotoxicity and immune reactivity comparable to those synthesized by chemical synthesis, citrate reduction (csAuNPs). (A) Cell death induced due to the toxicity of ccAuNPs on HEp-2 cells. (B) Cell death induced due to the toxicity of csAuNPs, plotted as percentage of cell viability against the concentrations of nanoparticles used. (C) Cell death in 4T-1 cells exposed to ccAuNPs. (D) Cell death in 4T-1 cells exposed to csAuNPs. (E) Serum levels of cytokines: IL-2, IL-4, IGF-1, GMCSF, Rantes, MCP-1, EGF and VEGF in mice following exposure of csAuNPs (orange bar), ccAuNPs (green bar) and control (no nanoparticles, purple bar). The variations between groups are statistically not significant (t-test; p > 0.05).