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Melatonin 8-10 Melatonin is synthesized from the amino acid tryptophan, which is first converted to serotonin and subsequently to melatonin
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Journal of Biological Chemistry 285 , 3315433164, doi: 10.1074/jbc.M110.143685 (2010)
[PMID: 19797713] Laboratory literature summary: laboratory assays for hCG: what should we measure and how
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