[Functional properties of hemoglobin during blood incubation in oxygen]

The affinity of hemoglobin for oxygen was studied during blood incubation in oxygen, air and argon. It was shown that the affinity of hemoglobin for oxygen increased during incubation of blood and hemoglobin in oxygen and air, and remained unchanged on incubation in argon. The concentration of 2,3-diphosphoglycerin acid and glucose in blood samples drastically fell in all the experiments. A possible affinity mechanism is discussed. It is concluded that the deference reaction of the blood system to hyperoxia is triggered at the level of the hemoglobin molecule.