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Effect of cadmium on LDH release. Cortical neurons were incubated with the indicated cadmium concentrations for 24 h, either in the absence or in the presence of serum. Results are expressed as percentages of LDH release after subtracting the control values. Data are mean±s.e.mean of three separate experiments from cells of different cultures, each one performed in triplicate. ns=not significant, **=P<0.01 and ***=P<0.001.
