Expression of Bmp6 and Hamp mRNAs positively correlates with serum NTBI in both Tfrc^fl/fland Tfrc^Tek-Cremice. Pearson correlation analysis of NTBI vs Bmp6 mRNA (A-B); NTBI vs Hamp mRNA (C-D); and Hamp mRNA vs Bmp6 mRNA (E-F). Data are from the experiments shown in Figures 2 and 3 with Tfrc^fl/fl and Tfrc^Tek-Cre mice kept on a SD, exposed to a 2% carbonyl HID for 18 hours, or placed on an IDD for 1 week. P values and Pearson r coefficients are provided for each graph.