![](/drem/stage5c/labels2/S55L.gif)
![condensed extra-embryonic mesoblast, cytotrophoblast, exocoelomic (Heuser's) membrane, fibrous coagulum, lacunar vascular circle, previllus mesoblast clump, trophoblast lacunae](/drem/stage5c/Z0/S55N.jpg)
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Carnegie Embryo #7700 | Location: 05-02-02
Keywords: condensed extra-embryonic mesoblast, cytotrophoblast, exocoelomic (Heuser's) membrane, fibrous coagulum, lacunar vascular circle, previllus mesoblast clump, trophoblast lacunae
Source: The Virtual Human Embryo.