normal neutrophil membrane preparations containing beta 2-adrenergic receptors were exposed to equimolar mixtures of the following redox couplets : ferrocyanide-ferricyanide , hemoglobin-methemoglobin , ascorbate-dehydroascorbate , lactate-pyruvate , glutathione ox-red , beta-hydroxybutyrate-acetoacetate , and nad-nadh .
C0019046
hemoglobin
C0025635
methemoglobin