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This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
The formation of a complex multicellular organism from a single cell is one of the most amazing processes of biology. Embryonic development is characterised by the careful regulation of cellular behaviours such that cells proliferate, migrate, differentiate and form tissues at the correct place and time. These processes are genetically controlled and depend both on the history of cells, their lineage, and on the activities of signalling pathways, which coordinate the cell interactions leading to organogenesis. The aim of the Frontiers research topic “Signalling pathways in embryonic development” has been to provide a forum for experts in cell and developmental biology to share recent adv...
'Patterning in Vertebrate Development' is a new volume in the 'Frontiers in Molecular Biology' series which provides a range of comprehensive, and authoritative reviews of current research into patterning, a fundamental process in developmental biology.
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Cruz examines the treatment of poverty, prostitution, war, and other social concerns in the cultural and literary discourses of early modern Spain.
The volume provides the first systematic comparative approach to the history of forms of address in Portuguese and Spanish, in their European and American varieties. Both languages share a common history—e.g., the personal union of Philipp II of Spain and Philipp I of Portugal; the parallel colonization of the Americas by Portugal and Spain; the long-term transformation from a feudal to a democratic system—in which crucial moments in the diachrony of address took place. To give one example, empirical data show that the puzzling late spread of Sp. usted ‘you (formal, polite)’ and Pt. você ‘you’ across America can be explained for both languages by the role of the political and military colonial administration. To explore these new insights, the volume relies on an innovative methodology, as it links traditional downstream diachrony with upstream diachronic reconstruction based on synchronic variation. Including theoretical reflections as well as fine-grained empirical studies, it brings together the most relevant authors in the field.
Informe sobre los proyectos financiados por el Plan Nacional de Investigación Científica y Desarrollo Tecnológico.