in 48 separate experiments , isolated canine brain preparations were subjected to 30 min of either hypoxic ( pao2 congruent to 20 mmhg ) perfusion , anoxic ( pao2 < 10 mmhg ) perfusion , or total ischemia followed by reperfusion for up to 2 h with normal oxygenated blood .
C0242184
hypoxic
C0003130
anoxic