منابع مشابه
Arrested cells are Mad as Hec
ot all isoforms are created equal. New results from Christiana Ruhrberg, David Shima (Cancer Research UK, London, UK), and colleagues reveal that the stickiness of vascular endothelial growth factor (VEGF) can make all the difference between blood vessels growing larger or finding new territory. VEGF initiates the formation and expansion of the vascular system. VEGF isoforms differ in their abi...
متن کاملReplicatively senescent cells are arrested in G1 and G2 phases
Most human somatic cells do not divide indefinitely but enter a terminal growth arrest termed replicative senescence. Replicatively senescent cells are generally believed to arrest in G1 or G0 stage of the cell cycle. While doing cell cycle analysis on three different lines of normal human fibroblasts we observed that 36-60% of the replicatively senescent cells had 4N DNA content. Only up to 5%...
متن کاملWhat are Stem Cells?
Stem cells are undifferentiated self regenerating multi potential cells. There are three types of stem cells categories by the ability to form after cells and correlated with the body’s development process. Totipotent: these stem cells can form an entire organism such as fertilized egg. Ploripotent: ploripotent cells are those that can form any cell in the body but cannot form an entire organ...
متن کاملMAD Ensembles Are Saner Than You Think
environment (as per traditional theorem proving systems); if the check fails at this highest level of abstraction, there is probably no need to start discussing transport protocols, specific cryptographic primitives, or processor power levels. Translation from the global specification to more concrete, lowerlevel specifications can be done automatically, much like compilation for typical progra...
متن کاملDoctorat HEC
In this paper, based on an ethnographic study, we show how management controllers craft their jobs through their daily practice and try to stretch their occupational identity. We adopt an original posture, developing a ‘negative ontology’ of practice, identity at work and professional competition. We argue that studying what individuals hide or despise in their daily activities enriches our und...
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ژورنال
عنوان ژورنال: Journal of Cell Biology
سال: 2002
ISSN: 1540-8140,0021-9525
DOI: 10.1083/jcb1592rr5