isolated hearts were perfused according to langendorff with a modified tyrode solution , saturated with a gas mixture containing either 95 % o2:5 % co2 ( control ) , 50 % o2:5 % co2 in n2 ( hypoxia ) , or 5 % co2 in n2 ( anoxia ) .
C0242184
hypoxia
C0003130
anoxia