vitamin c lipid metabolites Lysine vitcylation is a C-derived protein modification that enhances STAT1-mediated immune response: Cell Lipid Metabolism - PMC
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Not for clinical, therapeutic, or diagnostic use

Only lyophilised powder should be frozen (at 20C)

Coppola A, Coppola L, Luongo C, Arciello A, Cacciapuoti F, Lama D,

That means that not only do the foods you eat have lower carnitine contents, but they're also less likely to provide one of the amino acids that your body needs to produce carnitine