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PDF] Vitamin B12 turnover in man. The assimilation of vitamin B12 from natural foodstuff by man and estimates of minimal daily dietary requirements. | Semantic Scholar
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Studies on the Minimum Daily Requirement for Vitamin B12 — Hematopoietic Responses to 0.1 Microgm. of Cyanocobalamin or Coenzyme B12, and Comparison of Their Relative Potency | NEJM
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