Cumulus expansion, nuclear maturation and connexin 43, cyclooxygenase-2 and FSH receptor mRNA expression in equine cumulus-oocyte complexes cultured in vitro in the presence of FSH and precursors for hyaluronic acid synthesis

Table 2 Effect of precursors for hyaluronic acid synthesis on nuclear maturation and cumulus expansion.

Maturation medium	Nuclear maturation rate % (n° of oocytes)	Cumulus expansion rate % (n° of oocytes)
Control	56% (34) ^a	53% (32) ^a
Control + precursors	61% (31) ^a	48% (31) ^a
Control + precursors + 1 μg/ml eFSH	59% (30) ^a	57% (29) ^a
Control without BSA with 20% FCS	65% (31) ^a	84% (31) ^b

ISSN: 1477-7827