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REVIEW

Not just another hole in the wall: understanding intercellular protein trafficking

Department of Biology, Duke University, Durham, North Carolina 27708, USA

Development and differentiation of multicellular organisms requires cell-to-cell communication. In plants direct signaling and exchange of macromolecules between cells is possible through plasmodesmata. Recently direct exchange of membrane-bound vesicles and organelles has been demonstrated between animal cells through formation of cytoplasmic bridges (tunneling nanotubes) in vitro. Here we review recent developments in cell-to-cell trafficking of macromolecules in plants and animals.

[Keywords: Intercellular protein movement; SHORT-ROOT; LEAFY; tunneling nanotubes; protein trafficking; KNOTTED]

¹ Corresponding author.

E-MAIL philip.benfey{at}duke.edu; FAX (919) 613-8177.

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