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doi: 10.1167/iovs.06-0889

It supports the production of collagen and elastin, two proteins that give skin its structure and bounce

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Published Research Data Quantified findings from peer-reviewed studies on DSIP amino acid residues in the DSIP nonapeptide sequence verified purity by HPLC analysis in every Stemcode batch Published Research Studies on DSIP 1986 DSIP: a review of its functional significance Neurosci Biobehav Rev 1977 Characterization of a delta electroencephalogram-sleep-inducing peptide Proc Natl Acad Sci Original characterization of DSIP isolated from cerebral venous blood and its effects on delta wave EEG sleep patterns