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Fecal corticosterone metabolite (FCM) levels after 24 h of blood sampling in mice sampled by facial vein phlebotomy (cheek), caudal vein phlebotomy (tail) and automatically (ABS), and in control mice (control) after 24 h of no intervention. Data are presented as mean ± SEM. P values < 0.05 were considered significant (*) and P < 0.01 strongly significant (**).
