Additional file 4. Potassium efflux is not involved in Cg-induced TNF production by macrophages. (A) Peritoneal macrophages were maintained in regular medium or high-concentrated KCl (25 mM) medium and then stimulated by Cg (300 μg/ml). At indicated time points, the supernatants were collected for quantification of TNF by Elisa. Data are represent the mean ± SD of four independent experiments compared WT (Cg) vs Treatments groups to determine the level of statistical significance (ns, not significant).