Mor Four MENS 2, KUL 
fi ug. jo. Bs Le " 
(earliest stage) 
allanloidean region of 
* trophosphere 
Fig. 3. 
allantois 
trophosphere i 
| omphaloidean 
| region of 
1k 
ROSES, trophosphere 
(proamnion not 
indicated ) 
area vasculosa 
yolksac 
aac ref]. 
lumen uteri ~ 
area vasculosa 
mesometrium ----------\.--- (lower boundary) 
dec. refl. 
Hubrecht del 
| F Hoth, Lith? Bain? 
