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Fig. 2. Effects of lamin A transfection on the distribution of endogenous emerin in MEFs (lmna-/-). (A) Untransfected cells show most of the emerin in the peripheral ER. A range of effects were observed for transfection with wild-type lamin A on the endogenous emerin: little or no effect on the distribution of emerin (B); partial relocation of emerin to the nucleus, with significant amounts of emerin remaining in the ER (C,D); and efficient relocation of emerin from the ER to the nucleus (E). All examples are wild-type lamin A in the pSVK3 plasmid. Bars, 10 µm.