Why a normal or high total B12 can coexist with cellular deficiency Total B12 measures what is in the blood, not what has reached the cells, so a high or normal value does not rule out a functional shortfall
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Selecting the appropriate quantity depends on the scale and stage of the research programme: AOD-9604 5mg is ideal for smaller-scale laboratory work, pilot studies, method development, and research programmes that are incorporating this compound for the first time
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(PubMed) Watanabe F, Bito T
Oral supplements take an obstacle course