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Peptides with more than single His residue, separated by a single Gly residue, showed blue shift of maximum absorption to ~585 nm

Absorption of vitamin b12 The guts ability to absorb vitamin b12 can be reduced by a number of factors, these include Some conditions of the digestive system, such as Chrons disease

* Correspondence: Pablo Albertos, [email protected] Disclaimer All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers

This can then promote better sleep quality, which can also improve memory