LM of a stage 2, 8-cell embryo in vitro. Blastomeres are equal size.
From: Veeck and Zaninovic´, 2003. Reproduced with permission of the publisher, Taylor & Francis Group.
Keywords: blastomere, blastomere cell membrane, blastomere cytoplasm, blastomere nucleus, eight-cell embryo, polar body, subzonal space, zona pellucida
Source: The Virtual Human Embryo.