Figure 4. NiCl2 induces pro-inflammatory cytokine production in BMDMs. (A) The mRNA expression levels of inflammatory cytokines after NiCl2 (0, 0.1, 0.5 and 1.0 mM) treatment for 24h. (B) Inflammatory cytokine expression is quantified in BMDMs cultural medium by ELISA after NiCl2 (0, 0.1, 0.5 and 1.0 mM) treatment for 24h. Data are presented with the means ± standard deviation (n=5). *p < 0.05 and **p < 0.01, compared with the control group.