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9 thoughts on “ Summer Rain - Delta-Sleep-Inducing Peptide - Mindworld (Cassette) ”

Jan 11,  · Delta sleep-inducing peptide, abbreviated DSIP, was first discovered in by the Swiss Schoenenberger-Monnier group who isolated it from the cerebral venous blood of rabbits in an induced state of sleep. It was primarily believed to be involved in sleep regulation due to its apparent ability to induce slow-wave sleep.