During gastrulation the cells of the blastula undergo coordinated processes of cell division, invasion, and / or migration to form two ( triploblastic ) tissue layers.
22.
Substantial collagen bundles anchor the dermis to the hypodermis in a way that permits most areas of the skin to move freely over the, deeper tissue layers.
23.
In ascomycetes, dikaryotic hyphae of the hymenium ( the spore-bearing tissue layer ) form a characteristic " hook " at the hyphal septum.
24.
From the inner lining of its wall, protoscoleces ( i . e . scoleces with invaginated tissue layers ) bud and protrude into the fluid filling the cyst.
25.
To close the wound left by the surgery, doctors used the synthetic material Gortex to replace parts of the girls'dura, a fibrous tissue layer covering the brain.
26.
"S . pyogenes " has several virulence factors that enable it to attach to host tissues, evade the immune response, and spread by penetrating host tissue layers.
27.
The hypodermium ( the tissue layer directly under the pileipellis ) is made of thin-walled, hyaline hyphae, 2.5 8 ?m broad, with a brownish incrusting pigment.
28.
Standing just beyond the spray of waves battering this island finger, geologists like Dan Murray examine the tissued layers of rocks at Beavertail Point and hunt for ancient fossils in their petrified folds.
29.
In the case of the Stillwater Marsh people, it seems more likely that continual movement of the joints, making bone come through the tissue layers, is the cause of their osteoarthritis.
30.
Fruit bodies, technically known as " gasterocarps ", form spherical spore-bearing heads with a peridium ( outer tissue layer ) made of two to four clearly defined layers of tissue.
