منابع مشابه
MicroRNAs looping around angiogenesis.
Angiogenesis and vasculogenesis determine the generation of blood vessels during development and in the adult. In general, angiogenesis involves growth of existing endothelial cells (ECs), whereas vasculogenesis comprises the de novo formation of blood vessels. The analysis of EC biology is of utmost importance to delineate proor antiangiogenic signaling cascades triggered by a variety of growt...
متن کاملDNA looping.
DNA looping is widely used in nature. It is well documented in the regulation of prokaryotic and eukaryotic gene expression, DNA replication, and site-specific DNA recombination. Undoubtedly looping also functions in other protein-DNA transactions such as repair and chromosome segregation. While the underlying physical chemistry of DNA looping is common to all systems, the precise biochemical d...
متن کاملLooping Caterpillars
There are two main paradigms for querying semi structured data: regular path queries and XPath. The aim of this paper is to provide a synthesis between these two. This synthesis is given by a small addition to tree walk automata and the corresponding caterpillar expressions. These are evaluated on unranked finite sibling-ordered trees. At the expression level we add an operator whose meaning is...
متن کاملProving Looping and Non-Looping Non-Termination by Finite Automata
A new technique is presented to prove non-termination of term rewriting. The basic idea is to find a non-empty regular language of terms that is closed under rewriting and does not contain normal forms. It is automated by representing the language by a tree automaton with a fixed number of states, and expressing the mentioned requirements in a SAT formula. Satisfiability of this formula implies...
متن کاملChromosome looping in yeast
Long-range chromosome organization is known to influence nuclear function. Budding yeast centromeres cluster near the spindle pole body, whereas telomeres are grouped in five to eight perinuclear foci. Using live microscopy, we examine the relative positions of right and left telomeres of several yeast chromosomes. Integrated lac and tet operator arrays are visualized by their respective repres...
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ژورنال
عنوان ژورنال: médecine/sciences
سال: 2010
ISSN: 0767-0974,1958-5381
DOI: 10.1051/medsci/2010268-9694