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(a) Serum stability assays of xrRNAΔP4−L4 constructs. (b) Serum stability assays of xrRNAΔP4−L4−siRNA constructs. The length of incubation in 50 % mouse serum at 37 °C is indicated above each lane. Mock is RNA incubated in water at 37 °C for 24 h. Blank is 50 % mouse serum incubated at 37 °C for 24 h. Reference bands in the ladder are single‐stranded RNA.
