Cumulus oophorus mucification during resumption of meiosis in the pig. A scanning electron microscope study J.-E. FLÉCHON, J. MOTLIK, R. H. F. HUNTER, Bernadette FLÉCHON, J. PIVKO and J. FULKAReprod. Nutr. Dévelop., 26 4 (1986) 989-998DOI: https://doi.org/10.1051/rnd:19860606