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Older adults (over 60 years) frequently develop B12 deficiency due to reduced gastric acid production (achlorhydria or hypochlorhydria), which impairs the release of B12 from food proteins
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Fourth, standard lab tests such as serum B12 are poor indicators of intracellular B12 levels
Next the gel was silver stained for the detection of the HGF monomers and dimers
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