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HPLC standard calibration curves for (a) sulphonamide standards at 1, 0.5, 0.25, 0.125, and 0.0625 μg/kg; (b) tetracycline standards at 0.2654, 0.5308, 1.0616, 2.1232, and 4.2464 μg/mL; (c) streptomycin showing linearity over the concentration range of 0.488, 0.976, 1.953, 2.485, and 3.102 μg/kg; and (d) ciprofloxacin standards at 0.003, 0.006, 0.012, 0.024 and 0.048 μg/kg run on HPLC under the Fluorometric Detector (FD).
