Pichia pastoris secreted peptides crossing the blood brain barrier and DSIP fusion peptide efficacy in PCPA induced insomnia mouse models Frontiers Delta Sleep Inducing Peptide (DSIP) 62568 57 4 PDS 4054 V How to Inject Peptides, +, Easy as 1 2 3!, +, Here are the few simple steps to start injecting your peptides., +, 1. Wash your hands, 2. Swab all the injection sites, 3. Open your needles, 4. Draw DSIP 10mg (Delta sleep inducing peptide) Particle Peptides