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Liquid chromatography separates compounds in a sample before mass spectrometry analysis

GHK is a tripeptide glycyl-L-histidyl-L-lysine isolated from human plasma in 1973 by Loren Pickart and Malcolm Thaler, who were investigating why serum from younger donors supported cultured liver cells better than serum from older donors

This ensures researchers get peptides in a timely manner

One unit of enzyme activity was defined as 1 mol of NADH oxidized/min at 25C

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[137] Laboratory [edit] The complete laboratory synthesis of B 12 was achieved by Robert Burns Woodward [138] and Albert Eschenmoser in 1972