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Immature oocyte quality and maturational competence of porcine cumulus-oocyte complexes subpopulations Biocell
Alvarez,Gabriel Martin; Dalvit,Gabriel Carlos; Achi,María Verónica; Miguez,Marcelo Sergio; Cetica,Pablo Daniel.
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 II rates achieved in A1, A2, B1 and B2 classes after in vitro maturation suggest...
Tipo: Info:eu-repo/semantics/article Palavras-chave: In vitro maturation; Nuclear maturation; Cytoplasmic maturation; Pig.
Ano: 2009 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452009000300005
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