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单词 germinal layer
释义

> as lemmas

germinal layer
germinal layer n. [after German Keimschicht (1817 or earlier)] a layer of cells capable of division and differentiation; spec. = germ layer n. at germ n. Compounds 3.
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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
1836 M. Barry tr. R. Wagner in Edinb. Med. & Surg. Jrnl. 45 426 I have distinctly observed the origin of the germinal layer [Ger. Keimschicht] out of the germinal spot.
1874 Arch. Dermatol. 1 64 It would appear from these investigations as if the real germinal layer (mutterboden) of the stratum corneum is to be looked for in the upper strata alone of the rete.
1880 T. H. Huxley Crayfish iv. 206 The protoplasmic substance of the yelk..constituting a germinal layer.
a1933 J. A. Thomson Biol. for Everyman (1934) II. 978 Growth begins to set in, and at unequal rates, the result being the establishment of the germinal layers—the ectoderm or epiblast, the endoderm or hypoblast, and (from worms upwards) the mesoderm or mesoblast.
1985 Internat. Jrnl. Pediatric Otorhinolaryngol. 10 101 The first case turned out to be a dysembryoma, classified as monodermic because of its origin from derivatives of only one germinal layer.
2009 C. H. Ernst & J. E. Lovich Turtles U. S. & Canada (ed. 2) 11 When growth is resumed, the germinal layer of the epidermis, rather than continuing to add to the edge of the existing scute, forms an entirely new layer.
extracted from germinaladj.
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