![](/drem/stage5a-1/labels2/S45L.gif)
![blastocystic cavity (blastocoele), cytotrophoblast, edematous endometrial stroma (decidua), edge of endometrial gland, embryonic disc, endometrial epithelium, membranous trophoblast at abembryonic pole, solid syncytiotrophoblast, syncytiotrophoblast / decidua interface](/drem/stage5a-1/Z0/S45N.jpg)
![](/drem/rulerbg.png)
0 μm
Carnegie Embryo #8020 | Location: 06-01-07
Keywords: blastocystic cavity (blastocoele), cytotrophoblast, edematous endometrial stroma (decidua), edge of endometrial gland, embryonic disc, endometrial epithelium, membranous trophoblast at abembryonic pole, solid syncytiotrophoblast, syncytiotrophoblast / decidua interface
Source: The Virtual Human Embryo.