the magnitude of this difference depends on ( a ) the oxygen content of the sample and thus is determined by the red blood cell content and by the state of oxygen saturation of hemoglobin , and ( b ) on the rate of dissociation of oxyhemoglobin and therefore is influenced by changes in ph , pco ( 2 ) , and temperature .
C0014792
red blood cell
C0030069
oxyhemoglobin