Fig. 1.

ECG measurements. Distances from the P to R wave were measured in ECGs for male and female mice exposed to saline (sal)/room air (RA) and lipopolysaccharide (LPS)/O₂. Data were analyzed by two-way ANOVA with Tukey’s post hoc analyses. Two-way ANOVA identified an effect of treatment, P = 0.0002, and individual differences were observed between saline/RA and LPS/O₂ measurements, P < 0.05. n = 4–8 mice/group. *Different between treatments, same sex; #different between sexes, same treatment.