normal membranes were found capable of binding native hemoglobin a and hemoglobin s in similar amounts when incubated at low hemoglobin : membrane ratios , but at high ratios hemoglobin saturation levels of the membranes increased progressively for hemoglobin a , hemoglobin s and hemoglobin a2 , respectively , in order of increasing electropositivity .
C0019016
hemoglobin a
C0019019
hemoglobin a2