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Serum levels of carbonyl stress markers in normal controls and patients with schizophrenia at admission. A. Pentosidine. B. Pyridoxal. Fourteen patients with high pentosidine (>2 SD higher than the mean in controls, >57.6ng/ml) are indicated with an asterisk. Values were compared with the 2-tailed Mann-Whitney U test. Error bars indicate mean and standard deviations.
