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Comparison of the elution profiles of AChE from the procainamide affinity column (1.0 × 5.5 cm) between Rhopalosiphum padi (a) and Sitobion avenae (b). Flow rate was 16 mL/h, and 1.0 mL fractions except fraction 1, which was 5.0 mL, were collected after the elution buffer containing 0.05 M tetraethylammonium iodide was applied. High quality figures are available online.
