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Celestine blue (CB) was introduced as a new electroactive indicator in DNA biosensors. The interaction of CB with DNA was investigated by electrochemical and spectroscopic methods. The effect of buffer kind and pH on the electrochemical behavior of CB was studied. The peak currents of CB were linearly related to DNA concentration in the range of 5.0×10-9 to 1.0×10-7 mol/L. The detection limit of this...
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