FIG. 9.

Nissl-myelin stained sections of the lesion site in graft cats. (A) Sagittal section from the midline of the lesion site in cat ACUTE-2. The darkened purple clusters in the center of the lesion are groups of small, undifferentiated cells. (B) Sagittal section at the midline of the lesion site in cat SUB-CHRONIC-3. (C) Horizontal section near the center of the lesion in cat CHRONIC-1. No axonal sparing or growth across the lesion could be identified in Nissl-myelin stained sections. Cysts can be seen in images B and C on the rostral end of the lesion; the presence of cysts has been noted in previous work,¹² and was not linked to differences in kinematic recovery. Color image is available online at www.liebertpub.com/neu