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Vitamin B12 is absorbed in the stomach with the help of stomach acid and intrinsic factor, a protein produced by the stomach
Some are absorbed so quickly that there is no enough time for a population of host cells to gather (Kawakami et al., 1997)
WADA has included thymosin beta-4 and analogues on its Prohibited List under the category of peptide hormones and related substances
Rather than describing outcomes in terms of symptom relief or treatment, investigators focus on mechanistic language such as changes in specific markers, pathways, or structural features
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