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Circadian rhythm of plasma endothelin in clinical health. Data expressed as a percentage of each data series mean; analysis on original data (in pmol/ml) yields P=0.010; MESOR ± SE = 2.68 ± 0.11; A (95% CI) =0.23 (0.06; 0.54). Demonstration of circadian rhythm in endothelin-1 for the first 10 subjects investigated [286] in keeping with earlier work [286] but not with a follow-up [287-289].
