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Electrophoretic mobility shift assay of the binding of bgt1, bgt2, bgt3, and bgt4 aptamers to CTX3 and α-Bgt: 5 μM aptamers against α-Bgt was incubated with indicated concentrations of CTX3 and α-Bgt for 20 min, and then the aptamer-toxin mixtures were separated on 2% agarose gel.
