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298,299 The human genome encodes more than 600 E3 ligases, underscoring the vast diversity and specificity of substrates targeted by the UPS

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162 The above studies indicate that AMPs can also be used as chemotherapeutic drug sensitizers, and the combination of AMPs and chemotherapeutic drugs has broad application prospects in the treatment of multidrug-resistant tumors

In fact, people often mention them both in one breath, as in: "NAC is a precursor to glutathione." (A precursor is a compound that is used to form another compound, generally through metabolic reactions inside the body.) So which one, if either, is better to take as a supplement