Fig. 2.

(a) Masson's trichrome stain of myocardial infarct showing the location of microdialysis and oxygen probes (marked by reverse perfusion (microdialysis) or the injection (oxygen probe) of 0.1% Evans blue dye). (b) Oxygen concentration is significantly lower in the myocardial infarct scar than in skeletal muscle, uninjured heart, or border zone (*p < 0.05). (c) Glucose concentration in myocardial infarct scar was significantly lower than in the border zone, plasma, or uninjured heart (*p < 0.05). (d) Lactate concentrations measured in the skeletal muscle, uninjured heart, myocardial infarct scar, infarct border zone, and blood plasma varied widely in individual measurements within groups; there were no significant differences between groups. All bars are mean + SEM.