Vegfc regulates EC migration as a chemoattractant, e.g., by guiding ECs in the PHBCs [ 9, 11], and indeed, we show that correct migration of the PHBCs was perturbed by deletion of mt2.
The tip cells respond to a gradient of VEGF-A by guided migration, while the proliferative response occurs in the sprout stalk [ 41].
PGC migration is guided by the chemokine Cxcl12a that binds Cxcr4b, which is expressed on the surface of these cells (Doitsidou et al., 2002; Knaut et al., 2003).
DC migration is guided by the rapid upregulation of adhesion molecules and chemokine receptors in response to chemokine and cytokine gradients generated by tissue-resident and infiltrating immune cells.
Country and regional highlights Documents and publications Meetings and events Useful links on migration UNICEF and migration UNICEF, guided by the Convention on the Rights of the Child, takes the position that the impact of migration on children, adolescents and women must be seen in the broader context of poverty, regional conflict, gender issues and childrens rights.
UNICEF in action Documents and tools Meetings and events Learn more UNICEF and migration UNICEF, guided by the Convention on the Rights of the Child, takes the position that the impact of migration on children, adolescents and women must be seen in the broader context of poverty, regional conflict, gender issues and children's rights.
As such, migration decisions are guided by the comparison of the present value of lifetime earnings in alternative employment opportunities net of migration costs.
In response, the monarchs flew north-east.These results suggest that the monarchs' migration is, indeed, guided by a magnetic compass (though it is known from previous work that the sun is also involved; these experiments were carried out in windowless rooms).
Harmonising international migration statistics are guided by regulations from the European Commission, such as 862/2007, adopted in July 2007, which is one of the cornerstones of migration statistics policy in the EU.
The mobility and migration variables were guided by previous research.
