| / English Dictionary |
ENDODERM
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
The inner germ layer that develops into the lining of the digestive and respiratory systems
Synonyms:
endoblast; endoderm; entoblast; entoderm; hypoblast
Classified under:
Hypernyms ("endoderm" is a kind of...):
germ layer ((embryology) any of the 3 layers of cells differentiated in embryos following gastrulation)
Context examples:
A malignant germ cell tumor of the central nervous system composed of primitive-appearing epithelial cells - putatively representing yolk sac endoderm - set in a loose, variably cellular, and often conspicuously myxoid matrix, resembling extra-embryonic mesoblast.
(Central Nervous System Yolk Sac Tumor, NCI Thesaurus/WHO)
FGF1 causes the foregut endoderm to develop into the liver.
(Fibroblast Growth Factor 1, NCI Thesaurus)
Endoderm and mesoderm are initially specified as a bipotential anlage called the endomesoderm.
(Endomesoderm, NCI Thesaurus)
The other two types of stem cell in the blastocyst are the extra-embryonic trophoblast stem cells (TSCs), which will form the placenta, and primitive endoderm stem cells (PESCs) that will form the yolk sac, ensuring that the foetus’s organs develop properly and providing essential nutrients.
(Scientists generate key life event in artificial mouse ‘embryo’ created from stem cells, University of Cambridge)
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