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Ontology Definition: TS11

Theiler Stage 11 - Neural Plate, Presomite Stage


NP: The amniotic cavity is sealed off with now three cavities - amniotic, exocoelom and ectoplacental cleft. The neural plate is defined anteriorly and the head process is developing. In the midline, sub-adjacent to the neural groove, the notochodal plate is visible.


LNP: The allantoic bud elongates.


EHF: The rostral of the neural plate begins to enlarge to form the head folds.


7.5 dpc - range (7.25-8)  
Downs & Davies OB-EB/LB-EHF-LHF: - no All. bud to late All. bud to early head fold to late head fold

Witschi Stage 12 -13 (rat - stage table)
Carnegie - Stage 9 (human - stage table)
Virtual Human Embryo - Stage 9

Scale bar in microns.