GABRIEL MARTIN ALVAREZ1*, GABRIEL CARLOS DALVIT1, MARÍA VERÓNICA ACHI1, MARCELO SERGIO MIGUEZ2, PABLO DANIEL CETICA1
BIOCELL, Vol.33, No.3, pp. 167-177, 2009, DOI:10.32604/biocell.2009.33.167
Abstract Porcine immature oocyte quality (i.e., that of live oocytes at the germinal vesicle stage) was evaluated according to features of the surrounding cumulus, aiming to establish maturational competence of different subpopulations of such cumulus-oocyte complexes. Six subpopulations were identified: A1 (with a dense cumulus), A2 (with a translucent cumulus), B1 (with the corona radiata), B2 (partly naked oocytes), C (naked oocytes), D (with a dark cumulus). The percent incidence of live oocyte in these subpopulations changed significantly as related to cumulus features, however the occurrence of oocytes in the germinal vesicle stage was lower in class D only. Similar metaphase… More >
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