The folding in of an outer layer so as to form a pocket in the surface.
1 During embryonic development, the lens forms from an invagination of surface ectoderm.
2 However, it is unknown whether glycosphingolipids directly take part in the membrane invagination process.
3 Also, in every case, the gastrula develops from the blastula by curving or invagination .
4 The etiology of intestinal invagination in a large number of patients remains to be established.
5 A blastula, with wide embryonic cavity (blastocoel, bl), g incipient invagination .
6 B depula, with advanced invagination , from the primitive mouth (g).
7 Some of the luminal cells showed invagination and putative engulfment of bacterial structures by pseudopod-like formations.
8 Hence before and during invagination there is an increasing differentiation of the inner from the outer layer.
9 Intraluminal invagination makes it possible to increase the distance between the stricture, and the retroperitoneal vessels and bowels.
10 The gastrula is then formed by invagination , or a kind of turning-up of the edge of the blastoderm.
11 C gastrula, with complete primitive gut: the embryonic cavity has almost disappeared in consequence of invagination . )
12 Nevertheless, the gastrula is formed here, as in the previous cases, by the folding or invagination of the blastula.
13 A very important and remarkable process now follows-namely ,thecurving or invagination of the blastula (Figure H).
14 The germinal layers form from the first closed tubes, the one-layered blastula being converted into the two-layered gastrula by invagination .
15 When the blastula is fully formed, we have again in this case the important folding or invagination that determines gastrulation.
16 On the other hand, large particles are taken up by membrane invagination without redistribution of IMP's and independent of the pits.
Другие примеры для термина "invagination"
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Translations for invagination