منابع مشابه
Neither too much nor too little: reactive oxygen species levels regulate Drosophila hematopoiesis.
Owing to their fast diffusion, reactive oxygen species (ROS) are important tissue signalling components. High levels of ROS are generally considered as deleterious to cells. In vivo experiments in the Drosophila hematopoietic organ now challenge this view by showing that high ROS levels are intrinsically required to prime myeloid-like progenitors to differentiate.
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Even before birth, infants attend to the statistical properties of their sensory environments to learn about events in world. Tracking these statistics is crucial to mastery of visual, social, linguistic, and cognitive tasks. However, the degree to which their sampling follows prescriptions of rational statistical inference is unclear. Do infants’ attentional preferences reflect efficient infor...
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D espite the striking improvements achieved with second-generation drug-eluting stents (DES), long-term (>1 year) device-oriented composite endpoints (DOCEs), including cardiac death, target-lesion myocardial infarction, and clinically driven target lesion revascularization still occur at a frequency of 2% to 3% per year, which partially offsets the very long term benefits of percutaneous coron...
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Human infants, like immature members of any species, must be highly selective in sampling information from their environment to learn efficiently. Failure to be selective would waste precious computational resources on material that is already known (too simple) or unknowable (too complex). In two experiments with 7- and 8-month-olds, we measure infants' visual attention to sequences of events ...
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ژورنال
عنوان ژورنال: Nature
سال: 1999
ISSN: 0028-0836,1476-4687
DOI: 10.1038/20089