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Swiss researchers first isolated it in 1974 from rabbit cerebral venous blood during induced sleep states

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The pMET protein levels peak at P7P14 in the neocortex, a period corresponding to synaptogenesis and dendritic outgrowth, and are downregulated during the 3rd post-natal week, between P14 and P17, when pruning and functional synapse maturation occur (Eagleson et al., 2016)

Identifying that a B12 deficiency may be linked to insomnia, to poor sleep duration, or to a sleep disturbance isn't the same as proving that B12 supplementation can prevent or cure it

Schuurhuis, D

Per ounce of pure B-12