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Subcellular localization of GUS-FIP1 fusion proteins in onion epidermal cells in a transient assay by particle bombardment. A, GUS-FIP1 fusion proteins are located in the cytosol and the nucleus. B, Construct containing GUS only is distributed evenly in both the cytosol and nucleus. C, Construct containing GUS-Nia (nuclear localization signal) is restricted only in the nucleus. Scale bar = 100 μm in A to C.
