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Vitamin B12 and insomnia have long been linked, however the research available remains inconclusive
This keeps B12 levels just right
There was no blinding
Freeze at -20 degrees Celsius only for long-term storage of vials that will not be opened for an extended period, and avoid repeated freeze-thaw cycles
Easy to measure
Singly-housed rodents may have increased adiposity 101 and, moreover, singly-housed mice in standard caging can engage in coprophagy of their own feces that may impact their cecal microbiome 102
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