Fig. 5
Hemoglobin variants in whole blood. Mean absorbance ± SEM. a. Methemoglobin. 3-way ANOVA, Ozone × EHC-93, p = 0.024 and EHC-93 × Recovery, p = 0.035. Tukey, *0 vs 0.8 ppm O3 within 0 mg/m3 EHC-93, †0 h vs 24 h Recovery within 50 mg/m3 EHC-93, p < 0.05. 2-way ANOVA, Ozone, p = 0.009. Tukey, #0.4 vs 0.8 ppm O3, p < 0.05. b. Carboxyhemoglobin. 3-way ANOVA, EHC-93, p < 0.001 and Recovery, p = 0.044. Tukey, *0 vs 50 mg/m3 EHC-93, †0 h vs 24 h Recovery, p < 0.05. For detailed statistics, refer to Additional files 5 & 7. (Sample size, n = 4/air pollutant exposure group; n = 6/air control group)