Fig. 7.  Cresyl violet staining of spinal cord of naive rats and rats treated with DL-threo-β-benzyloxyaspartate (TBOA) in formalin and complete Freund's adjuvant (CFA) models. (A ) Representative photographs show neuronal cell architecture in dorsal and ventral horns of naive rats and rats treated with TBOA at 1 h postformalin injection. (B ) Representative photographs show neuronal cell architecture in dorsal and ventral horns of naive rats and rats treated with TBOA at 6 h postinjection with CFA. (C ) Average number of cresyl-violet–stained cells on the ipsilateral versus  contralateral sides of spinal cord gray matter in naive rats and rats treated with TBOA at 1 h postformalin injection or 6 h post-CFA injection.