Continuous intravenous infusion of human mesenchymal stromal cell-derived small extracellular vesicles in spinal cord injured rat modulates extracellular matrix and has greater therapeutic efficacy than multiple single injections

Nakazaki, Masahito; Lankford, Karen L.; Toyoshima, Masayuki; Tanaka, Yoshiaki; Sumida, Tomokazu S.; Kocsis, Jeffery D.