Results 71 to 80 of about 1,102,149 (353)

The presence of webbing affects the oviposition rate of two-spotted spider mites, Tetranychus urticae (Acari: Tetranychidae) [PDF]

open access: yes, 2009
Several species of tetranychid mites including Tetranychus urticae Koch (Acari: Tetranychidae) construct complicated three-dimensional webs on plant leaves. These webs provide protection against biotic and abiotic stress.
Dicke, M., Magalhães, S., Oku, K.
core   +2 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

Recombination rate and reproductive success in humans [PDF]

open access: yesNature Genetics, 2004
Intergenerational mixing of DNA through meiotic recombinations of homologous chromosomes during gametogenesis is a major event that generates diversity in the eukaryotic genome. We examined genome-wide microsatellite data for 23,066 individuals, providing information on recombination events of 14,140 maternal and paternal meioses each, and found a ...
Augustine, Kong   +13 more
openaire   +2 more sources

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

open access: yesFEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka   +11 more
wiley   +1 more source

The bullhead Cottus gobio , a versatile and successful fish [PDF]

open access: yes, 1983
A series of studies on the ecology of the bullhead, Cottus gobio is described. Habitat choice, growth rate and longevity, population density, biomass and production, reproduction, life history and feeding is compared at 8 sites in England and 1 site in ...
Mann, R.H.K., Mills, C.A.
core  

Risk-Taking Behavior and Its Impact on Treatment, Vaccination and Diagnosing [PDF]

open access: yes, 2015
We present results from two recent mathematical biology studies that address the effect of risk-taking behavior on epidemic models. We show that when risk-taking prevails over riskavoidance, it is possible to show a detrimental and counterintuitive ...
Maxin, Daniel
core   +4 more sources

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

open access: yesFEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva   +10 more
wiley   +1 more source

High levels of dietary vitamin E improve the reproductive performance of female Oreochromis niloticus - doi: 10.4025/actascibiolsci.v36i1.19830

open access: yesActa Scientiarum: Biological Sciences, 2013
This study aimed to evaluate the effect of vitamin E on reproductive responses of female tilapia (Oreochromis niloticus). To this, isonitrogenous and isocaloric diets with different levels of vitamin E supplementation (200, 300, 400, and 500 mg kg-1 ...
Thálita Stefann Ribeiro Nascimento   +3 more
doaj   +1 more source

Study of radiation effects on mammalian cells in vitro [PDF]

open access: yes, 1968
Radiation effect on single cells and cell populations of Chinese hamster lung tissue is studied in vitro. The rate and position as the cell progresses through the generation cycle shows division delay, changes in some biochemical processes in the cell ...
Sinclair, W. K.
core   +1 more source

Resource allocation, hyperphagia and compensatory growth [PDF]

open access: yes, 2004
Organisms often shown enhanced growth during recovery from starvation, and can even overtake continuously fed conspecifics (overcompensation). In an earlier paper (Ecology 84, 2777-2787), we studied the relative role played by hyperphagia and resource ...
Gurney, William S. C., Nisbet, Roger M.
core   +1 more source

Home - About - Disclaimer - Privacy