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Nature 435, 30-33 (5 May 2005) | doi:10.1038/435030a; Published online 4 May 2005

Developmental biology:  Morphogens hitch a greasy ride

Richard S. Mann1 & Joaquim Culi2

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Morphogen proteins guide the development of many tissues in animals, but how are these insoluble proteins ferried around the body? A well-known group of lipid transporters might be the answer.

Every once in a while, a scientific discovery results in the marriage of two previously disparate fields. On page 58 of this issue, such a romance is suggested by Eaton and colleagues1.

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