Encara no tenim significats per a "germinal layers".
1It is composed of two simple cell-layers, the familiar primary germinal layers.
2What is the relation of the cells to the germinal layers?
3But this involved the severance of the two primary germinal layers- amostimportant process.
4The two secondary germinal layers of the body-wall: 1.
5The first scientist to recognise and clearly distinguish the four secondary germinal layers was Baer.
6APPARENTLY a temporary inversion of the two germinal layers.
7The two primary germinal layers were first distinguished by Pander in 1817 in the incubated chick.
8Four secondary germinal layers develop, two middle layers arising between the limiting layers (coeloma).
9The remarkable processes of gastrulation, ovum-segmentation, and formation of germinal layers present a most conspicuous variety.
10The two strata of cells that form the wall of the tube are the primary germinal layers.
11In all these we can distinguish four secondary germinal layers, which develop from the two primary layers.
12Cells from the two primary germinal layers of the mammal (from both layers of the blastoderm).
13These tissue-layers are formed originally from four different simple cell-layers, which are the much-discussed four secondary germinal layers.
14These lowly organised animals do not form germinal layers, and therefore do not succeed in forming true tissue.
15Thus arose the primary germinal layers-theinner, alimentary, or vegetal layer, and the outer, covering, or animal layer.
16Homology of the germinal layers.
Aquesta col·locació està formada per:
Germinal layers per variant geogràfica