Figure 1
From: Characterization and spinal fusion effect of rabbit mesenchymal stem cells

Definition of fusion results. A. Excellent: prominent osseous growth between bilateral transverse processes with remodeling (arrow). B. Good: moderate osseous growth with continuity between bilateral transverse processes (arrow). C. Fair: osseous growth between bilateral transverse processes with substantial clefts (arrow). D. Poor: scanty osseous growth between bilateral transverse processes.