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Use of dyes to enable entry of nanoswitches into the agarose gel for separation. Gel electrophoresis results of 5 or 0 pM of PSA in (A) 20% FBS or (B) 20% bovine urine in the absence of any dyes, only SYBR Gold, only Coomassie Brilliant Blue G-250, or both SYBR Gold and Coomassie Brilliant Blue G-250. The location of the looped bands are specified by the orange arrows.
