Stage 3 embryo in vitro in the terminal phase of the hatching process. The blastocyst increases in size as it emerges from the zona pellucida. Note fragments left behind.
From: Veeck and Zaninovic´, 2003. Reproduced with permission of the publisher, Francis and Taylor Group.
Keywords: blastocyst(s), blastocystic cavity (blastocoele), inner cell mass (embryoblast), mural trophoblast, terminal phase of hatching, zona pellucida
Source: The Virtual Human Embryo.