the isolated minor haemoglobin fractions ( haemoglobin d ) of ostrich , chicken and duck haemoglobin , which constitute about 30 % of total intracellular haemoglobin , form crystalline aggregates upon deoxygenation at physiological temperature , ionic strength and ph and at haemoglobin concentrations even well below those present in the red cell .
C0019046
haemoglobin
C0014792
red cell