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. 2017 Apr 4;8:158. doi: 10.3389/fphys.2017.00158

Figure 4.

Figure 4

The concentrations of leptin, tumor necrosis factor alpha (TNF-α) and interleukin 6 (IL-6) in plasma following air exposure (AE) of control mice (open columns), and water-pipe smoke (WPS) exposure for 30 min/day for 6 months (filled columns). Each vertical column and bar represent the mean ± SEM (n = 10–11 mice in each group). P < 0.05 was considered significant.