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The effect of different fragments of 3F3R on GFP protein expression. (A) Positions and nucleotide sequences of 3F3R fragments. (B) The sequences of 3F46, 3R49, 3F135 and 3F235 were inserted downstream of the GFP gene in pAlu14. HeLa cells were transfected with the expression vectors and GFP protein was detected by fluorescence microscopy (W: white light, F: fluorescent light, x 100 times).
