Quenching of singlet oxygen by human red cell ghosts.


Time resolved measurements of singlet oxygen phosphorescence at 1270 nm were made from unsealed red cell ghosts, labeled with 5-(N-hexadecanoyl)aminoeosin and suspended in deuterium oxide buffer. The singlet oxygen emission lifetime was long, 23 +/- 1 microseconds. The lifetime of the singlet oxygen phosphorescence from intact unsealed ghosts was not a… (More)


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