Figure 2

Western immunoblot showing that HMGB1 is included in the prepared ICs. Detection of HMGB1 protein in the prepared IC samples and in the negative controls by western immunoblot analysis. Lanes: (1) control IgG alone; (2) lupus IgG alone; (3) supernatants of untreated U937 cells and control IgG; (4) supernatants of untreated U937 cells and lupus IgG; (5) supernatants of UV-treated U937 cells and control IgG; and (6) supernatants of UV-treated U937 cells and lupus IgG (ICs).