نتایج جستجو برای: outer hyperechogenic zone

تعداد نتایج: 173169  

2015
Paolo Tortorella Enzo D'Ambrosio Ludovico Iannetti Federica De Marco Maurizio La Cava

PURPOSE To investigate the correlation between best-corrected visual acuity (BCVA), the foveal inner segment/outer segment (IS/OS) junction or ellipsoid portion of inner segment (EPIS/ellipsoid zone), and the cone outer segment tips (COST) line or interdigitation zone integrity in eyes with uveitic macular edema (ME). METHOD A retrospective observational study involving all patients from Janu...

2005
David E. Ocumpaugh Richard W. Young

The distribution and synthesis of retinal mucopolysaccharides (MPS) in the rat have been studied by autoradiography, following injection of S-sulfate, supplemented by histochemical procedures. The results indicate that sulfated MPS occur in the plexiform and optic nerve fiber layers, but are most heavily concentrated in the photoreceptor zone. In this zone, production of MPS becomes significant...

Journal: :iranian journal of veterinary medicine 2015
foroogh sadat mansoori hamid roshani

background: the ostrich is an interesting subject concerninganimal evolution and morphology studies. it has been speculatedthat ostrich eyes would have distinct tissue structures and this hasnot been previously studied in detail. objectives: the aim of thepresent study was to investigate the histology of the outer layer ofthe ostrich. methods: ten mature ostriches were chosen from anostrich bre...

Journal: :Investigative ophthalmology & visual science 2011
Helena M Pakter Sandra C Fuchs Marcelo K Maestri Leila B Moreira Luciana M Dei Ricardi Vítor F Pamplona Manuel M Oliveira Flávio D Fuchs

PURPOSE Computer-assisted methods to measure retinal vessel diameters have been incorporated into research, but it is not clear which component of the vessels they are measuring. This study was conducted to compare measurements of retinal vessel diameter by using imaging-processing software on color fundus photographs (FPs) and fluorescein angiographs (FAs). METHODS FP and FA images were take...

Journal: :Ultrasound in Obstetrics and Gynecology 1995

2012
Tetsuji Nagata

The kidneys of mammals microscopically consist of the nephrons, which can be divided into two portions, the renal corpuscles and the uriniferous tubules. The renal corpuscles are composed of the glomeruli which are covered with the Bowman’s capsules. They are localized in the outer zone of the kidney, the renal cortex, while the uriniferous tubules are composed of two portions, the proximal por...

2014

Touch perception is important in most living organisms and extremely sensitive detection systems have evolved to meet this need. Pacinian corpuscles (PCs) are primary mechanoreceptors. In the human, they are found in the skin (where they act as touch receptors), in the joints, in muscles and in many organs (where they act as motion sensors). The purpose of the work described in this thesis is t...

2006
M. Lindblom

Nickel soft x-ray zone plates are fabricated by through-mask electroplating. The authors report on how a uniform nickel thickness can be obtained over the entire zone plate using pulse and pulse reverse plating. If the plating is carried out at a constant current the nickel thickness has been observed to decrease with radius. This results in lower outer zones and reduced diffraction efficiency ...

Journal: :Annals of botany 2002
Sven Kerstens Jean-Pierre Verbelen

The net orientation of cellulose fibrils in the outer epidermal wall of the root elongation zone of 57 angiosperm species belonging to 29 families was determined by means of Congo Red fluorescence and polarization confocal microscopy. The angiosperms can be divided in three groups. In all but four plant families, the net orientation of the cellulose fibrils is transverse to the root axis. Three...

Journal: :Archives of disease in childhood. Fetal and neonatal edition 1995
A Pellicer F Cabañas A Pérez-Higueras A García-Alix J Quero

Cerebral ultrasound and colour Doppler flow imaging (CDFI) were used to diagnose a wide spectrum of anomalies of cell migration (17 patients): presumed lissencephaly (n = 12); schizencephaly of both fused (n = 2) and open lips (n = 2); hemimegalencephaly (n = 1); and subependymal type grey matter heterotopia (n = 12). The patients with grey matter heterotopia had irregular ventricular margins (...

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