<p>Data are shown as ΔC<sub>t</sub> data (top panel) and as fold-change relative to female controls (bottom panel). Data are least-squares means ± SEM (top) or were calculated from the least-squares means of ΔC<sub>t</sub> (bottom). RNA abundance was affected by sex (P = 0.0527) and DKK1 ((P = 0.0222) but not by the interaction (P = 0.5791).</p