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Concentrations of urinary LTE4 (a) and plasma histamine (b) in control subjects (Control, n = 30) and patients with bronchial asthma (n = 30) at a stable condition (Stable), during exacerbations (Exacerbation) and after 21 days of treatment with oral glucocorticoids when patients showed evidence of clinical improvement (Recovery). Mean values ± S.E.M. are indicated by closed circles with error bars. NS, not significant. (Cited from [19]).
