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Gene expression and the nervous system Broad Institute Connectivity Map data reveals that GHK influences the expression of a staggering number of human genes, with 50% or greater change in expression in roughly 31% of all human genes examined

Seite et al

For example, both cytosolic APX1 and chloroplastic/mitochondrial SAPX had significantly higher expression in actively growing zones, as well as many root and root protoplast-related structures

Regulation of expression of a cDNA from barley roots encoding a high affinity sulphate transporter

However, your body relies on balance, and even essential nutrients can sometimes have unintended effects when levels become too high