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Letter

Nature Cell Biology 9, 654–659 (1 June 2007) | doi:10.1038/ncb1596

Exosome-mediated transfer of mRNAs and microRNAs is a novel mechanism of genetic exchange between cells

Hadi Valadi , Karin Ekstr|[ouml]|m , Apostolos Bossios , Margareta Sj|[ouml]|strand , James J Lee & Jan O L|[ouml]|tvall

Exosomes are vesicles of endocytic origin released by many cells. These vesicles can mediate communication between cells, facilitating processes such as antigen presentation.