Allogeneic mesenchymal stem cells improve indices of lumbar intervertebral disc degeneration without site specificity of injection in an ovine model. (April 2015) - Freeman, B.; Kuliwaba, J.; Zarrinkalam, M.; Jones, C.; Shu, C.; Colloca, C.; Melrose, J.; Mulaibrahimovic, A.; Gronthos, S.; Zannettino, A.; Howell, S.