%0 Journal Article %A Michaƫl Manuel %T Early evolution of symmetry and polarity in metazoan body plans %J Comptes Rendus. Biologies %D 2009 %P 184-209 %V 332 %N 2-3 %I Elsevier %R 10.1016/j.crvi.2008.07.009 %G en %F CRBIOL_2009__332_2-3_184_0