Figure 3. Uremic toxins in healthy senior cats. Healthy cats in cohort 1 were divided into two groups: those less than 12 years of age (YNG), and those aged 12 years or older (OLD). (A–E) The box and bars indicate means and SEM. P-values from the Mann-Whitney test are presented as asterisks: *P < 0.05. (F, G) Spearman’s correlation analysis between cat’s age and log concentration of TMAO and IxS, respectively. P-value and correlation coefficient are indicated in the plot.