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. 2018 Oct 1;27(11):1613–1622. doi: 10.1177/0963689718799040

Fig. 1.

Fig. 1.

Timeline of UCB-MSCs, UCB-MSCs with PDRN, and UCB-MSCs with PDRN injections four times per week. G1-S, 0.2 mL (1 × 106 cells) UCB-MSCs; G2-P1, 0.2 mL (1 × 106 cells) UCB-MSCs with one injection of 0.2 mL PDRN; G3-P4, 0.2 mL (1 × 106 cells) UCB-MSCs, and four injections of 0.2 mL PDRN per week were injected under ultrasound guidance into the left shoulder subscapularis full-thickness tears at 6 weeks after tears were created. All rabbits were euthanized by carbon monoxide inhalation 4 weeks after the first injection of different solutions, and gross morphology of the tear site, histologic examination, and motion analysis were performed. PDRN: Polydeoxyribonucleotide acid; UCB-MSCs: human umbilical cord blood-derived mesenchymal stem cell.