THE PRELEPTOTENE CHROMOSOME CONDENSATION AND DECONDENSATION IN THE OVARY OF THE SHEEP EMBRYO P. MAULÉON, Monique DEVICTOR-VUILLET, J. M. LUCIANI, Jacqueline BEZARD and Françoise BERTHELOT Ann. Biol. anim. Bioch. Biophys., 16 3 (1976) 293-296 DOI: 10.1051/rnd:19760303