This is a prospective, multicenter, randomized, single-blinded, controlled study evaluating safety and preliminary efficacy of immunoselected, culture-expanded, nucleated, allogeneic MPCs (NeoFuse) combined with MasterGraft Matrix in a commercially available PEEK cervical Spacer compared to an active control in subjects undergoing 2 or 3 level anterior cervical discectomy and fusion with anterior cervical plate fixation.