Table 1.

Effect of MCAO durations on ischemic brain injury

Group	Neurological Deficit	Infarct Volume	Death Rate
MCAO-30min	1.0 ± 0.5 (0∼2) (n = 12)	9.5%±2.2% (n = 12)	0 (0 out of 12)
MCAO-45min	4.0 ± 1.0 (3∼5) (n = 30)Δ	22.6%±2.7% (n = 12)☆	0 (0 out of 30)
MCAO-60min	6.0 ± 1.0 (5∼7) (n = 25)Δ	33.4%±3.1% (n = 12)☆	16.7% (5 out of 30)▾

^ΔP < 0.01 vs. middle cerebral artery occlusion (MCAO)-30 min (rank-sum test). ☆P < .0.01 vs. MCAO-30min (t-test). ▾P < .0.01 vs. MCAO-30 min (χ² test). Note that the death rate, neurological deficit, and infarct volume increased with the duration of MCAO.