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Human umbilical cord blood-derived mesenchymal stem cell (MSC) and ultrasound images. (A): Human umbilical cord blood-derived MSCs. (B): Injection was made in the left shoulder subscapularis (SCC) full-thickness tears under ultrasound guidance. (C): Longitudinal ultrasound image showed the needle (arrows) in the left shoulder SCC of the rabbit. Abbreviations: S, mesenchymal stem cell; T, tendon.
