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The absorbance was measured using a microplate reader (Molecular Device, Menlo Park, CA, USA) at a wavelength of 490 nm
Whats more, a vitamin B12 supplement alone, or part as part of a vegan multivitamin both seem equally effective at maintaining proper vitamin B12 levels, as long as the dosage is adequate
freezing must be avoided to prevent crystal formation and loss of sterility assurance
Vitamin B12 or folate deficiency anaemia - Diagnosis
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