نتایج جستجو برای: cryptic

تعداد نتایج: 9824  

Journal: :Biology letters 2012
Michael J Angilletta Robbie S Wilson

Animals commonly use their limbs as signals and weapons during territorial aggression. Asymmetries of limb performance that do not relate to asymmetries of limb size (cryptic asymmetry) could substantially affect disputes, but this phenomenon has not been considered beyond primates. We investigated cryptic asymmetry in male crayfish (Cherax dispar), which commonly use unreliable signals of stre...

Journal: :AJNR. American journal of neuroradiology 1997
W P Dillon

Cryptic vascular malformations have intrigued clinicians since the first report of “calcifying epileptogenic hemangiomas” by Penfield and Ward appeared in 1948 (2). Despite many detailed radiologic and pathologic studies on the subject, controversy still exists regarding their underlying pathophysiology, terminology, and treatment. Are cryptic vascular malformations a heterogeneous group of mal...

Journal: :Human heredity 2013
Kai Wang Xijian Hu Yingwei Peng

The principal component method and the mixed effects model represent two popular approaches to controlling for population structure and cryptic relatedness in genetic association studies. There are only a handful of studies comparing their performance. These studies are typically based on simulation studies and the results are therefore limited in their applicability. In this paper, we conduct ...

Journal: :Systematic biology 2014
Mark Adams Tarmo A Raadik Christopher P Burridge Arthur Georges

Several recent estimates of global biodiversity have concluded that the total number of species on Earth lies near the lower end of the wide range touted in previous decades. However, none of these recent estimates formally explore the real "elephant in the room", namely, what proportion of species are taxonomically invisible to conventional assessments, and thus, as undiagnosed cryptic species...

2015
Dario Balestra Elena Barbon Daniela Scalet Nicola Cavallari Daniela Perrone Silvia Zanibellato Francesco Bernardi Mirko Pinotti

Mutations affecting specific splicing regulatory elements offer suitable models to better understand their interplay and to devise therapeutic strategies. Here we characterize a meaningful splicing model in which numerous Hemophilia B-causing mutations, either missense or at the donor splice site (5'ss) of coagulation F9 exon 2, promote aberrant splicing by inducing the usage of a strong exonic...

2015
Ana Rivera-Barahona Rocío Sánchez-Alcudia Hiu Man Viecelli Veronique Rüfenacht Belén Pérez Magdalena Ugarte Johannes Häberle Beat Thöny Lourdes Ruiz Desviat

The spf/ash mouse model of ornithine transcarbamylase (OTC) deficiency, a severe urea cycle disorder, is caused by a mutation (c.386G>A; p.R129H) in the last nucleotide of exon 4 of the Otc gene, affecting the 5' splice site and resulting in partial use of a cryptic splice site 48 bp into the adjacent intron. The equivalent nucleotide change and predicted amino acid change is found in OTC defic...

Journal: :The Journal of Experimental Medicine 1995
A Lanzavecchia

T cell tolerance depends on the presentation of selfproteins to T cells and therefore can only be established to those self-determinants which, under steady-state conditions, are generated in sufficient amounts to be recognized by T cells undergoing deletion in thymus or anergy in the periphery. Thus, there is large number of self-determinants that are cryptic because they are not generated at ...

Journal: :Nucleic acids research 2004
Anna B Osipovich Erica K White-Grindley Geoffrey G Hicks Michael J Roshon Christian Shaffer Jason H Moore H Earl Ruley

Gene trap vectors developed for genome-wide mutagenesis can be used to study factors governing the expression of exons inserted throughout the genome. For example, entrapment vectors consisting of a partial 3'-terminal exon [i.e. a neomycin resistance gene (Neo), a poly(A) site, but no 3' splice site] were typically expressed following insertion into introns, from cellular transcripts that spli...

2015
Nelson A. Canal Vicente Hernández-Ortiz Juan O. Tigrero Salas Denise Selivon

The occurrence of cryptic species among economically important fruit flies strongly affects the development of management tactics for these pests. Tools for studying cryptic species not only facilitate evolutionary and systematic studies, but they also provide support for fruit fly management and quarantine activities. Previous studies have shown that the South American fruit fly, Anastrepha fr...

Journal: :Proceedings. Biological sciences 2006
Keri V Langridge

The salience of bilateral symmetry to humans has led to the suggestion that camouflage may be enhanced in asymmetrical patterns. However, the importance of bilateral symmetry in visual signals (and overall morphology) may constrain the evolution of asymmetrical camouflage, resulting in the bilaterally symmetrical cryptic patterns that we see throughout the animal kingdom. This study investigate...

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