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The diurnal rhythm of wakefulness, NREMS, REMS, EEG SWA, body temperature, and locomotor activity of WT (left) and preproghrelin KO (right) mice on the baseline days (open symbols) and on the RF days 4–6. Data are averaged across RF days 4 and 6. *Significant difference between baseline days and treatment days (univariate tests of significance for planned comparisons, P < 0.05). See legend for Fig. 1 for details.
