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Embryonic Spleen Timeline Table
From Embryology
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Embryonic Carnegie stage data from a recent study of the
Kyoto Collection embryos
.
[1]
Carnegie stage 13
- spleen neither a bulge nor as a high-density area
Carnegie stage 14
to
17
- spleen a bulge in the dorsal mesogastrium.
Carnegie stage 14
- dorsal mesogastrium vessels.
Carnegie stage 16
to
18
- A high-density area was first recognized.
Carnegie stage 16
- pseudostratified mesothelium replaced with high columnar cells and then with low columnar cells.
Carnegie stage 17
- basement membrane was obvious.
Carnegie stage 18
- haematopoietic cells were detected.
Carnegie stage 19
and
23
- spleen and stomach increase in length at the same rate (0.51 ± 0.11).
Carnegie stage 20
- after this stage the spleen became apparent (Intrasplenic folds occur later).
dorsal mesogastrium cells differentiated into mesenchymal cells and sinus formation started.
hilus formation.
Carnegie stage 23
- parallel entry of the arteries and veins.
Kyoto Collection
↑
Endo A, Ueno S, Yamada S, Uwabe C & Takakuwa T. (2015). Morphogenesis of the spleen during the human embryonic period.
Anat Rec (Hoboken) , 298
, 820-6. PMID:
25403423
DOI
.
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