نتایج جستجو برای: midline dose

تعداد نتایج: 320901  

2001
Phan Luu Don M. Tucker

Objectives: Focal electrical ®elds recorded over the midline prefrontal cortex have been found to index rapid evaluative decisions, including the recognition of having made an error in a speeded response task. The nature of these electrical ®elds and how they are related to cortical areas involved in response execution remains to be clari®ed. Methods: As subjects performed a speeded response ta...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 1999
M J Murray P M Whitington

roundabout (robo) encodes an axon guidance receptor that controls midline crossing in the Drosophila CNS. In robo mutants, axons that normally project ipsilaterally can cross and recross the midline. Growth cones expressing Robo are believed to be repelled from the midline by the interaction of Robo and its ligand Slit, an extracellular protein expressed by the midline glia. To help understand ...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 1998
D Y Wu G E Schneider J Silver M Poston S Jhaveri

Retinal fibers approach close to the tectal midline but do not encroach on the other side. Just before the entry of retinal axons into the superior colliculus (SC), a group of radial glia differentiates at the tectal midline; the spatiotemporal deployment of these cells points to their involvement in the unilateral containment of retinotectal axons. To test for such a barrier function of the te...

Journal: :Neuron 2000
Srikanth Rajagopalan Emmanuelle Nicolas Valérie Vivancos Jürg Berger Barry J. Dickson

In the Drosophila CNS, the midline repellent Slit acts at short range through its receptor Robo to control midline crossing. Longitudinal axons express high levels of Robo and avoid the midline; commissural axons that cross the midline express only low levels of Robo. Robo levels are in turn regulated by Comm. Here, we show that the Slit receptors Robo2 and Robo3 ensure the fidelity of this cro...

Journal: :Developmental cell 2016
Alaa A Arraf Ronit Yelin Inbar Reshef Andreas Kispert Thomas M Schultheiss

The vertebrate body plan contains both dorsal and ventral midline structures. While dorsal midline structures have been extensively studied, formation of ventral midline structures, and how they become aligned with the dorsal midline, is a fundamental aspect of vertebrate development that is poorly understood. This study uses the chick dorsal mesentery (DM) as a model for investigating the form...

2015
Timothy A Evans Celine Santiago Elise Arbeille Greg J Bashaw Graeme W Davis

During nervous system development, commissural axons cross the midline despite the presence of repellant ligands. In Drosophila, commissural axons avoid premature responsiveness to the midline repellant Slit by expressing the endosomal sorting receptor Commissureless, which reduces surface expression of the Slit receptor Roundabout1 (Robo1). In this study, we describe a distinct mechanism to in...

Journal: :Development 1998
N S Soriano S Russell

SOX-domain proteins are a class of developmentally important transcriptional regulators related to the mammalian testis determining factor SRY. In common with other SOX-domain genes, the Drosophila Dichaete gene has a dynamic expression profile in the developing central nervous system, including cells of the ventral midline. We find defects in the differentiation of midline glia and concomitant...

2015
Haley E. Brown Marie C. Reichert Timothy A. Evans

The midline repellant ligand Slit and its Roundabout (Robo) family receptors constitute the major midline repulsive pathway in bilaterians. Slit proteins produced at the midline of the central nervous system (CNS) signal through Robo receptors expressed on axons to prevent them from crossing the midline, and thus regulate connectivity between the two sides of the nervous system. Biochemical str...

Journal: :dental research journal 0
sonia jindal kamlesh kothari amit kumar singh

macinnis and baig modified altemirs’ original technique for sub‑mental intubation. instead of a lateral entry, they described a central entry just anterior to the sub‑mental crease that does not carry the risk of damage to the lingual nerves, submandibular ducts and sublingual glands. we describe here our experience with this modified sub‑mental intubation that also allows the operating surgeon...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید