[1] INSERM, U709, F-75014 Paris, France
[2] INRA, SCRIBE, Dept PHASE, Equipe Sexual & Reprod, F-35042 Rennes, France
[3] INRA, Lab Genet Biochim & Cytogenet, F-78350 Jouy En Josas, France
[4] INRA, UMR Biol Dev & Reprod, F-78350 Jouy En Josas, France
[5] Univ Gand, Merelbeke, Belgium