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Some reports suggest that oral vitamin B12, a less invasive alternative to injections, may be sufficient in maintaining adequate serum levels in select cases

The transmembrane rather than paracellular transport of lipophilic compounds was supported by the demonstration of an inverse association between lipid/water partition coefficient and increased transport rate following calcium chelation, i.e., disrupting intercellular junctions increased the transport of hydrophilic but not of lipophilic small organic molecules [31]

Refrigeration preserves potency and prevents peptide degradation

Furthermore, PDA is a potent stimulator of F-actin production in fibroblasts