An alternative possibility is that certain types of physical environment, such as the Eurasian steppes, favour language spread and differentiation, whereas other types, such as the mountainous zones, favour the proliferation of small linguistic communities, regardless of technology.
Clarification of the mechanisms of the virus spread and differentiation by study of the relationship between genetic, geographical and temporal variability of PRRSV may help in the development of better strategies to control the PRRSV spread.
Crypt-like topography affected Caco-2 spreading and differentiation during early culture, however the effect diminished as culture progressed.
Using this technique, we identified several neotissue microenvironments supporting MSC adhesion, spreading and differentiation toward early vascular lineages.
In the third step, a combination of BMP4 (10 ng/ml), FGF2 (20 ng/ml) and Activin (30 or 100 ng/ml) was added, leading to spreading and differentiation of the colonies (Figure 3A).
The SUEL lectin in the sea urchin egg has specificity for galactose [ 34]. hPKD1 is involved in mechanotransduction, regulation of cell growth, cell spreading and differentiation [ 12, 13].
The absence of stiffness dependent spreading and differentiation on PDMS, apparently contradictory to previous findings of cell differentiation dependence on substrate stiffness, can be explained by the ability of seeded cells to remodel the collagen layer present on viscoelastic PDMS, diminishing their sensitivity to substrate stiffness.
Using polyacrylamide as a model material, we showed that on high-creep hydrogels (HCHs), hMSCs displayed increased proliferation, spread area and differentiation towards multiple lineages, compared to their purely stiff analogue, with a particular propensity for differentiation towards a smooth muscle cell (SMC) lineage.
In particular surface nanoscale morphology profoundly influences cell adhesion, spread, growth and differentiation [1] [7].
Interestingly, we observed a very low variability of chloroplast sequences of R. acetosa, which seemed to be consistent with the idea of a recent spread and low differentiation between metallicolous and non-metallicolous populations.
These integrins initiate cellular processes that stimulate osteoblast adhesion, spreading, motility and differentiation.
