Fecal CORT output.

<p>Immunoreactive corticosterone metabolites (CORT) are quantified as nanogram-equivalents of unmetabolized corticosterone excreted within 24 hours. Data are presented as means±95% confidence intervals of the log-normal distribution. Data are presented as averages of three days, to compensate for excluded data (refer to Results segment, and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0058460#pone-0058460-g001" target="_blank">Figure 1</a>).