sh-Oligopeptide-78 Di-(sh-Pentapeptide-22 SP) sh-Pentapeptide-23 SP Di-(sh-Pentapeptide-22 SP) is the synthetic peptide consisting of sh-Oligopeptide-78, two repeats of sh-Pentapeptide-22 SP, sh-Pentapeptide-23 SP, and two repeats of sh-Pentapeptide-22 SP. The fusion protein contains 38 amino acids which may contain disulfide bonds and/or glycosylation, and consists of the proper sequence of the 20 standard amino acids.