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Molecular weight is a primary determinant of passive nasal absorption
A scientist named Andrew Mallon spotted apparently duplicated and altered images in the underlying papers as far back as 2016 and kept raising it
Aggregation or precipitation in solution, reducing available monomeric peptide
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Cyanocobalamin is a synthetic form of vitamin B12 that may have lower absorption rates, while methylcobalamin is often preferred for its higher bioavailability
