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Nature 436, 770-771 (11 August 2005) | doi:10.1038/436770a; Published online 10 August 2005

Cell biology:  The secret life of sperm

Claire Ainsworth1

  1. Claire Ainsworth is a senior news & features editor for Nature.
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Far from being mere DNA delivery boys, it's now becoming clear that sperm also ship a complex cargo of RNA and proteins that may be crucial for an embryo's early development. Claire Ainsworth reports.

"What's in sperm?" demands Tim Karr.

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