As we have described (22 (link)), 2 days prior to fasting, mice were singly housed. Fasting was initiated by placing mice in a new cage without food but with ad libitum water. Mice were fasted for 24 h starting at 09:00 h. Immediately after the 24 h fasting, behavioral testing, biomarker studies, and/or injection studies were performed. Consequently, all studies occurred during the dark (active) cycle. Mouse weight was recorded immediately before and immediately after fasting using an Ohaus Adventurer Pro digital scale (Parsippany, NJ, USA).
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