LM of a stage 2 embryo on day 3 in vitro during increased cell-cell contact (compaction 3). Cells can still be counted.
From: Veeck and Zaninovic´, 2003. Reproduced with permission of the publisher, Taylor & Francis Group.
Keywords: blastomere nucleolus, exterior part of blastomere cell membrane, increased blastomere cell-cell contact, stage 2 embryo, subzonal space, zona pellucida
Source: The Virtual Human Embryo.