نتایج جستجو برای: 1 to 10

تعداد نتایج: 11387487  

2017

1 The Rockefeller University Press J. Cell Biol. https://doi.org/10.1083/jcb.201705017 Introduction The plasma membrane (PM) serves as a physical barrier that separates the cytosolic milieu of the cell from the comparatively harsh external chemical environment. It also serves as a sophisticated communication platform through which cells receive and respond to messages from each other, as well a...

2014
Zahra Kabiri Gediminas Greicius Babita Madan Steffen Biechele Zhendong Zhong Jamal Aliyev Yonghui Wu Ralph Bunte Bart O. Williams Janet Rossant David M. Virshup

Wnt/β-catenin signaling supports intestinal homeostasis by regulating proliferation in the crypt. Multiple Wnts are expressed in Paneth cells as well as other intestinal epithelial and stromal cells. Ex vivo, Wnts secreted by Paneth cells can support intestinal stem cells when Wnt signaling is enhanced with supplemental R-Spondin 1 (RSPO1). However, in vivo, the source of Wnts in the stem cell ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زبانهای خارجی 1393

the purpose of this study was to examine the english language needs of medical students at tehran university of medical sciences . analysis of the needs took place for three groups: 320 undergraduate students, 30 postgraduate students and 20 university instructors. a triangulation approach to collect data was used in which a combination of the quantitative (using the questionnaires) and qualita...

2015
Yamini Deb Dominik Marti Martin Frenz Cris Kuhlemeier Didier Reinhardt

The spatial arrangement of leaves and flowers around the stem, known as phyllotaxis, is controlled by an auxin-dependent reiterative mechanism that leads to regular spacing of the organs and thereby to remarkably precise phyllotactic patterns. Themechanism is based on the active cellular transport of the phytohormone auxin by cellular influx and efflux carriers, such as AUX1 and PIN1. Their imp...

2015
Jaclyn S. Knibbe-Hollinger Natasha R. Fields Tammy R Chaudoin Adrian A. Epstein Edward Makarov Sidra P. Akhter Santhi Gorantla Stephen J. Bonasera Howard E. Gendelman Larisa Y. Poluektova

Humanized mice are frequently utilized in bench to bedside therapeutic tests to combat human infectious, cancerous and degenerative diseases. For the fields of hematology-oncology, regenerative medicine, and infectious diseases, the immune deficient mice have been used commonly in basic research efforts. Obstacles in true translational efforts abound, as the relationship between mouse and human...

2005
Claire Sergent Sylvain Baillet Stanislas Dehaene

In the phenomenon of attentional blink, identical visual stimuli are sometimes fully perceived and sometimes not detected at all. This phenomenon thus provides an optimal situation to study the fate of stimuli not consciously perceived and the differences between conscious and nonconscious processing. We correlated behavioral visibility ratings and recordings of event-related potentials to stud...

2014
Christine D. Wilson-Mendenhall Lisa Feldman Barrett Lawrence W. Barsalou

The tremendous variability within categories of human emotional experience receives little empirical attention. We hypothesized that atypical instances of emotion categories (e.g. pleasant fear of thrill-seeking) would be processed less efficiently than typical instances of emotion categories (e.g. unpleasant fear of violent threat) in large-scale brain networks. During a novel fMRI paradigm, p...

2016
Hadeesha Piyadasa Anthony Altieri Sujata Basu Jacquie Schwartz Andrew J. Halayko Neeloffer Mookherjee

House dust mite (HDM) challenge is commonly used in murine models of allergic asthma for preclinical pathophysiological studies. However, few studies define objective readouts or biomarkers in this model. In this study we characterized immune responses and defined molecular markers that are specifically altered after HDM challenge. In this murinemodel, we used repeated HDM challenge for twoweek...

2013
Farooq Husain Maniyar Till Sprenger Teshamae Monteith Christoph Schankin Peter James Goadsby Peter J. Goadsby

*These authors contributed equally to this work. Present address: Department of Neurology, The Royal London Hospital (Barts and the London NHS Trust), Whitechapel Road, Whitechapel, London E1 1BB, UK and Basildon and Thurrock University Hospitals NHS Foundation Trust, Nethermayne, Essex SS16 5NL, UK Present address: Department of Neurology and Division of Neuroradiology, University Hospital Bas...

2015
Renato Quispe William Checkley Mark D. Huffman

Methods and Results-—We estimated short-term and lifetime cardiovascular disease risk in a pooled population from 2 studies of Peruvian populations. Short-term risk was estimated using the atherosclerotic cardiovascular disease Pooled Cohort Risk Equations. Lifetime risk was evaluated using the algorithm derived from the Framingham Heart Study cohort. Using previously published thresholds, part...

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