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Chlorophyll a content and maximum yield of radical ion pair formation, P680 +· Pheo -· , were analyzed in D1/D2/cytb 559 preparations isolated from spinach. The following results were obtained: (a) chromatographic analysis with HPLC using an area-ratio method independent of extinction coefficients revealed that 7±0.5 Chl a are present per 2 Pheo; (b) based on highly sensitive...
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