| 单词 | germinal layer |
| 释义 | > as lemmasgerminal 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. 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 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. < as lemmas |
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