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Effect of various viral RNA elements on intronless β-globin gene expression. (A) Western analysis of the β-globin expression level in 293T cells either mock transfected or transfected with 400 ng of the indicated expression plasmid, together with 200 ng pCMV/β-gal as an internal control. (B) This representative RPA was performed as described in Figure 1C ▶.
