Subcellular localization and putative NLSs/NES identification. A, Subcellular localization of two isoforms of porcine E2F3b. B. Effect of putative NLSs/NES on E2F3b subcellular localization. Wt, wild type; Mut, mutant; nt, nucleotide; aa, amino acids. The bar is 100 µm.