Figure 1
24-h profiles of mRNA expression. Plotted are mRNA levels of the candidate genes relative to reference genes ACTB and HPRT1 in equine hair follicles. Data are presented as means ± SEM. Black and white bars indicate hours of darkness and light, respectively. ANOVA revealed significant 24-h variation for PER1, PER2 and DBP (p = .024, p = .02 and p = .03;, respectively) whereas Cosinor analysis confirmed a significant 24-h component for PER1, DBP and NR1D2 (p = .002, p = .0331 and p=.03;, respectively.