Figure 3.

Dose-dependent changes in oxygen partial pressure at half saturation (P50) of (a) 5-hydroxy-methylfurfural (5-HMF) with α-ketoglutaric acid (αKG) (5-HMF + αKG), (b) 5-hydroxy-methylfurfural alone (5-HMF) and (c) α-ketoglutaric acid alone (αKG). Grey lines indicate individual courses for females and black lines for males, and black circles show the mean ± SD of all subjects. The colored lines represent the linear regression function with the parameters shown for females (red) and males (blue), respectively.