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Under general physiological conditions, circulating ferric iron (Fe 3+ ) binds to transferrin (TF) and is transported into cells intermediated by the membrane protein transferrin receptor 1 (TFR1)
In extreme cases, people with pernicious anemia or a related condition known as vitamin B12 deficiency myelopathy can develop nerve damage related to vitamin B12 deficiency
Their papers abstract could be interpreted to suggest that the B12 content in multivitamins was decreased by storage time, light exposure, temperature, and vitamin C
The carrier vehicle matters enormously here: lipid-based formulations that match skin's own fatty acid profile penetrate more effectively than water-based serums
2004) (Fig
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