Oocytes in sheep homozygous for a mutation in bone morphogenetic protein receptor 1B express lower mRNA levels of bone morphogenetic protein 15 but not growth differentiation factor 9

Abstract excerpt

The aim of this study was to test the hypothesis that the high ovulation rate in ewes (BB) homozygous for a mutation in the bone morphogenetic protein receptor type 1B (BMPR1B) gene is linked to lower BMP15 and/or GDF9 mRNA in oocytes compared with those in wild-type (++) ewes. Cumulus cell-oocyte complexes (COC) and granulosa cells (GC) were recovered from ≥1 mm diameter follicles of BB and ++ ewes during a...

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