the effect of deoxygenation on the amount of hemoglobin ( hb ) proximal to the membranes of intact , density-fractionated normal ( aa ) and sickle ( ss ) red cells was studied by estimating resonance energy transfer efficiencies from fluorescent probes , 12- ( 9-anthroyloxy ) stearic acid or 2- ( 9-anthroyloxy ) stearic acid , in the outer lipid layer to cytoplasmic hemes .
C0019046
hemoglobin
C0014792
red cells