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单词 mesentoderm
释义

mesentodermn.

Brit. /mɛzˈɛntə(ʊ)dəːm/, /mɛsˈɛntə(ʊ)dəːm/, U.S. /mɛzˈɛn(t)əˌdərm/, /mɛsˈɛn(t)əˌdərm/; see also meso- comb. form.
Origin: A borrowing from German. Etymon: German Mesentoderm.
Etymology: < German Mesentoderm (J. B. Platt 1894, in Archiv f. mikrosk. Anat. 43 913) < Meso- meso- comb. form + Entoderm (see entoderm n. at ento- ). Compare earlier mesendoderm n.
Embryology.
= mesendoderm n.
ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > embryo parts > [noun] > membrane and layers of cells
germinal layer1836
cell layer1843
mucous layer1846
germ layer1855
mesoblast1857
blastoderm1859
head fold1873
mesoderm1873
epiblast1875
hypoblast1875
splanchnopleure1875
mesenchyme1881
acroblast1884
mesothelium1886
epimere1890
mesectoderm1894
mesendoderm1894
cœloblast1895
placode1907
shield1913
mesentoderm1921
meristoderm1945
bilayer1962
1921 Jrnl. Compar. Neurol. 33 4 In 1894 Miss Platt elaborated the idea..introducing the terms mesectoderm and mesentoderm for mesenchyme derived from the ectoderm and endoderm, respectively.
1938 Nature 23 Apr. 754/1 The mesectoderm..normally migrates ventrally over the mesentoderm.
1957 Dorland's Illustr. Med. Dict. (ed. 23) 818/2 Mesentoderm, the inner layer of an amphibian gastrula not yet separated into mesoderm and entoderm.
1987 Development 99 273/2 The pattern mosaic may reside in the internal tissues, i.e. in the mesentoderm.
This entry has been updated (OED Third Edition, September 2001; most recently modified version published online June 2022).
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n.1921
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