نتایج جستجو برای: تریزومی 21

تعداد نتایج: 248177  

2007
PETER EGGER WOLFGANG EGGERT HANNES WINNER Peter Egger Wolfgang Eggert

This paper analyzes to which extent foreign plant ownership involves lower tax payments than domestic plant ownership. We employ a model of endogenous foreign subsidiary ownership to derive a set of empirically testable hypotheses about the differential taxation of foreignand domestically-owned subsidiaries. We assess these hypotheses in a dataset of 33,577 European foreignand domestically-owne...

Journal: :Trends in cognitive sciences 1998
R A Andersen D C Bradley

The ability to perceive the 3-D shape of objects solely from motion cues is referred to as structure-from-motion perception. Recent experiments indicate how this remarkable perceptual attribute is computed by the brains of primates. This computation proceeds in at least two stages, one in which motion measurements are made and another in which moving surfaces are reconstructed. The middle tempo...

Journal: :Journal of neurophysiology 2002
Richard J A Van Wezel Kenneth H Britten

In many sensory systems, exposure to a prolonged stimulus causes adaptation, which tends to reduce neural responses to subsequent stimuli. Such effects are usually stimulus-specific, making adaptation a powerful probe into information processing. We used dynamic random dot kinematograms to test the magnitude and selectivity of adaptation effects in the middle temporal area (MT) and to compare t...

Journal: :Journal of medical genetics 1976
E Tuncbilek M Bobrow G Clarke K Taysi

An extreme variation of the short arm of no. 21 chromosome in the mother of a 21/21 translocation mongol is described. The possible relation between the very long short arm of chromosome no. 21 in the mother and a centric fusion type of translocation mongolism in the offspring is discussed.

Journal: :International reviews of immunology 1990
J E Berman F W Alt

Elucidation of the cellular and molecular mechanisms which determine the expressed antibody repertoire remains a major challenge in immunology. Knowledge of V gene diversity, organization, and expression is important to an understanding of the formation of the antibody repertoire in normal as well as diseased states. In the last few years, great advances have been made in our understanding of t...

2016
Elnaz Davoodi Leila Kosseim

This paper describes the system deployed by the CLaC-EDLK team to the SemEval 2016, Complex Word Identification task. The goal of the task is to identify if a given word in a given context is simple or complex. Our system relies on linguistic features and cognitive complexity. We used several supervised models, however the Random Forest model outperformed the others. Overall our best configurat...

Journal: :The Journal of Clinical Endocrinology & Metabolism 2015

Journal: :JCI insight 2017
Yuqing Yuan Yiping Yang Xiaopei Huang

IL-21 has been shown to play an important role in the CD8 T cell response during acute and chronic viral infections. However, the role of IL-21 signaling in the CD4 T cell response to viral infection remains incompletely defined. In a model of infection with vaccinia virus, we show that intrinsic IL-21 signaling on CD4 T cells was critical for the formation of memory CD4 T cells in vivo. We fur...

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