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Stability of ceftazidime at various temperatures. (A) Influence of the time of incubation (12% solution); (B) influence of the drug concentration (24-h incubation); (C) influence of the pH (12% solution; 24-h incubation) (std, unincubated samples). All values are the mean of three independent determinations ± standard deviations (symbols without bars correspond to values for which the standard deviation is smaller than the symbol size). w/v, wt/vol.
