Resumption of oocyte meiosis in mammals: On models, meiosis activating sterols, steroids and EGF-like factors

Finally, in vivo and in vitro studies in the rat confirm and extend recent studies showing that locally produced and released EGF-like factors, such as epiregulin, seem to mediate at least part of the LH/hCG actions on oocyte maturation and release of ova at ovulation.