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Nature Cell Biology 8, 652–654 (1 July 2006) | doi:10.1038/ncb0706-652

The centrosome: built on an mRNA?

Thoru Pederson

Nuclei, mitochondria and chloroplasts replicate on their own — the latter two (at least) having arisen as endosymbionts — but no player in the choreography of eurkaryotic cell replication is more mysterious than the centrosome, to which the term 'enigmatic' is often justifiably applied. Centrosomes are propagated not by expansion and fission, but by the assembly of a vicinal copy.