نتایج جستجو برای: frog

تعداد نتایج: 12839  

Journal: :The Biochemical journal 1985
M M McMurray J S Hansen B E Haley D J Takemoto L J Takemoto

Light-activated hydrolysis of cyclic GMP is achieved through the photoexcitation of rhodopsin, a process which then triggers the replacement of GDP for GTP by a retinal guanosine 5'-triphosphatase referred to as 'transducin'. The transducin-GTP complex then switches on the phosphodiesterase [Fung, Hurley & Stryer (1981) Proc. Natl. Acad. Sci. U.S.A. 78, 152-156]. The bovine transducin consists ...

Journal: :Hypertension 1983
M C Proto A Coviello M C Khosla F M Bumpus

The role of frog-skin angiotensin II (AII) in amphibia was studied by comparing the sodium and water permeability effects of three angiotensins (AII): frog skin (Ala-Pro-Gly-[Ile3, Val5]-Ang II), human [( Asp1, Ile5]-AII), and Japanese goosefish [( Asn1-Val5]-AII). Frog-skin AII increased the short-circuit current (SCC) significantly after it was added to the dermal side of the isolated skin of...

2013
Thomas Endlein W. Jon P. Barnes Diana S. Samuel Niall A. Crawford Ang Bee Biaw Ulmar Grafe

Tree frogs climb smooth surfaces utilising capillary forces arising from an air-fluid interface around their toe pads, whereas torrent frogs are able to climb in wet environments near waterfalls where the integrity of the meniscus is at risk. This study compares the adhesive capabilities of a torrent frog to a tree frog, investigating possible adaptations for adhesion under wet conditions. We c...

Journal: :General physiology and biophysics 1999
G P Gusev A V Lapin N I Agalakova

Frog erythrocytes were incubated in iso- or hypotonic media containing 10 mmol/l Rb+ and 0.1 mmol/l ouabain and both Rb+ uptake and K+ loss were measured simultaneously. Rb+ uptake by frog red cells in iso- and hypotonic media was reduced by 30-60% in the presence of 0.01-0.1 mmol/l [(dihydroindenyl)oxy] alkanoic acid (DIOA) or 0.5-1.0 mmol/l furosemide. Furosemide inhibited K+ loss from frog e...

Journal: :Journal of psycholinguistic research 2000
F Hurewitz S Brown-Schmidt K Thorpe L R Gleitman J C Trueswell

Two experiments are reported which examine children's ability to use referential context when making syntactic choices in language production and comprehension. In a recent on-line study of auditory comprehension, Trueswell, Sekerina, Hill, and Logrip (1999) examined children's and adults' abilities to resolve temporary syntactic ambiguities involving prepositional phrases (e.g., "Put the frog ...

Journal: :The Journal of experimental biology 2006
Gianluca De Rienzo Francesco Aniello Margherita Branno Gaia Izzo Sergio Minucci

Frog relaxin (fRLX) belongs to the relaxin/insulin gene family present in the testis of Rana esculenta and is specifically expressed by Leydig cells. Since the expression of fRLX transcript changes during the reproductive cycle and is more abundant when circulating levels of androgens are relatively high, we investigated the effect(s) of testosterone and its antagonist (cyproterone acetate, CPA...

Journal: :Folia biologica 2006
Danuta Izabela Kosik-Bogacka Tomasz Tyrakowski

The aim of this study was to examine the effect of serotonin and epinephrine on ion transport of isolated frog skin. The addition of serotonin after incubation in Ringer solution (RH), bumetanide (BUME), and after initial incubation in amiloride and subsequently in RH, reduced hyperpolarization and did not effect the mechanosensitivity of frog skin. Following incubation of the frog skin with am...

Journal: :Mechanisms of Development 2002
Francesco Aniello Margherita Branno Gianluca De Rienzo Diana Ferrara Carmela Palmiero Sergio Minucci

A cDNA clone encoding for a Prothymosin alpha (Prot-alpha) has been isolated and characterized from the testis of the frog Rana esculenta. Frog Prothymosin alpha (fProt-alpha) predicted a 109 amino acid protein with a high homology to the mammalian Prot-alpha. fProt-alpha contains 28 aspartic and 25 glutamic acid residues and presents the typical basic KKQK amino acid sequence in the close carb...

2005
R. J. PUMPHREY

THIS paper is the first of a series in which the results of a study of the electrical properties of frog skin will be presented. Frog skin is a convenient material for bio-electric investigation. It is easily obtained, can be mounted as a membrane and gives high potentials (ca. 40—70 millivolts between opposite sides of the skin). On the other hand the complexity of structure of the skin tissue...

2017
Gemma Palomar Freed Ahmad Anti Vasemägi Chikako Matsuba Alfredo G. Nicieza José Manuel Cano

By combining 7077 SNPs and 61 microsatellites, we present the first linkage map for some of the early diverged lineages of the common frog, Rana temporaria, and the densest linkage map to date for this species. We found high homology with the published linkage maps of the Eastern and Western lineages but with differences in the order of some markers. Homology was also strong with the genome of ...

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