Fig. 2From: Osmotic-shock produced by vitrification solutions improves immature human oocytes in vitro maturationOocyte and embryo development. Parthenogenetic embryo development of GV-oocytes exposed to vitrification solutions without the subsequent immersion in LN2 and in vitro matured until MII (G4). Activated oocyte showing an elongated pronucleus, which had not expelled the second polar body (a). Parthenogenetic embryo at day 2 (b), at day 4 (morura stage) (c), and at day 5 (blastocyst stage) (d) of developmentBack to article page