Neurological outcome assessed by paralysis score from 3 hrs to day 2 after SCI with 7-min. ischaemia (A) and 9-min. ischaemia (C) and from day 2 to 7 after SCI with 7-min. ischaemia (B) and 9-min. ischaemia (D). 7C: control group subjected to 7-min. ischaemia; 7E: EPO group subjected to 7-min. ischaemia; 9C: control group subjected to 9-min. ischaemia; 9E: EPO group subjected to 9-min. ischaemia; mild: subgroup including mice with mild paralysis; severe: subgroup including mice with severe paralysis. There were no significant differences in paralysis score between groups 7C and 7E or between groups 9C and 9E until 2 days after SCI (A and C). However, group 7E-severe exhibited significant improvement between day 2 and 7, compared to group 7C-severe (B). A similar tendency was observed in group 9E-severe between day 2 and 7, compared to group 9C-severe (D). Paralysis scores in group 7C-mild, 7E-mild, 9C-mild and 9E-mild all returned to normal (grade 0) at day 7 (B and D). (B and D) *P < 0.05 with Bonferroni correction.