Table 1.

Expression of TUNEL (+) cells in the spinal cord ($\stackrel{-}{x}$ ± s, %).

Groups	Normal group	3-day group	7-day group	16-day group	30-day group
TUNEL (+) cells	0.503 ± 0.541	2.472 ± 0.472△	2.845 ± 0.517△∗	3.964 ± 0.944△#	3.325 ± 0.630△#

^△ P < 0.01, compared to the normal group; *P > 0.05, compared to the 3-day group; ^# P < 0.05, compared to the 3-day group.