![](/drem/stage5a-1/labels2/S40L.gif)
![blastocystic cavity (blastocoele), embryonic disc, endometrial sinusoid, membranous trophoblast at abembryonic pole, syncytiotrophoblast / decidua interface](/drem/stage5a-1/Z0/S40N.jpg)
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Carnegie Embryo #8020 | Location: 06-02-03
Keywords: blastocystic cavity (blastocoele), embryonic disc, endometrial sinusoid, membranous trophoblast at abembryonic pole, syncytiotrophoblast / decidua interface
Source: The Virtual Human Embryo.