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Calibration data for simultaneous detection of PSMA and PSA in undiluted calf serum with ECL responses integrated over 180 s at 1.0 V vs Ag/AgCl. (A) Recolorized CCD images of 5 arrays showing increase in ECL response with increase in concentration. Influence of concentrations on relative ECL response for (B) PSMA and (C) PSA, error bars show standard deviation for n=4.
