Results 41 to 50 of about 157,699 (364)
Zoological Letters, 2018 Background DNA transposons are generally destroyed by mutations and have short lifespans in hosts, as they are neutral or harmful to the host and therefore not conserved by natural selection.
Akira Hikosaka, Seigo Konishi
doaj +1 more source
International Journal of Nanomedicine, 2017 The use of quantum dots (QDs) for nanomedicine is hampered by their potential toxicologic effects and difficulties with delivery into the cell interior.
E. Galdiero +9 more
semanticscholar +1 more source
HMGA proteins in Xenopus laevis
Developmental Biology, 2008 HMGA proteins are chromatin “architectural modifiers”, bearing three conserved “AT-hook” motifs with which they bind to DNA AT-rich regions to assist in gene transcription. We report the developmental expression of Xenopus laevis hmga2β (Xhmga2β) and of hmgax (Xhmgax), a gene encoding a highly divergent HMGA with eight AT-hooks. Xhmga2β transcripts are
VIGNALI, ROBERT +5 more
openaire +2 more sources
Primeiro estudo parasitológico em rã com garras Africano (Xenopus laevis, Anfibia) no Chile [PDF]
, 2017 Introduced species can arrive into new territories with parasites; however, these species are expected to face lower parasite richness than in their original regions. Both introduced hosts and parasites can affect native fauna.
Castillo, Cristóbal +5 more
core +1 more source
Measurement of Photon Statistics with Live Photoreceptor Cells [PDF]
Physical Review Letters (Editors' Suggestion) 109, 113601 (2012), 2012 We analyzed the electrophysiological response of an isolated rod photoreceptor of Xenopus laevis under stimulation by coherent and pseudo-thermal light sources. Using the suction electrode technique for single cell recordings and a fiber optics setup for light delivery allowed measurements of the major statistical characteristics of the rod response ...
arxiv +1 more source
Controllable stimulation of retinal rod cells using single photons [PDF]
Phys. Rev. Lett. 112, 213601 (2014), 2013 New tools and approaches of quantum optics offer a unique opportunity to generate light pulses carrying a precise number of photons. Accurate control over the light pulses helps to improve the characterization of photo-induced processes. Here, we interface a specialized light source which provides flashes containing just one photon, with retinal rod ...
arxiv +1 more source
Replication factory activation can be decoupled from the replication timing program by modulating Cdk levels [PDF]
, 2010 In the metazoan replication timing program, clusters of replication origins located in different subchromosomal domains fire at different times during S phase. We have used Xenopus laevis egg extracts to drive an accelerated replication timing program in
Alexander M. Thomson +64 more
core +4 more sources
Sets of FCS experiments to quantify free diffusion coefficients in reaction-diffusion systems. The case of Ca2+ and its dyes [PDF]
Phys. Rev. E 95, 062408 (2017), 2016 Many cell signaling pathways involve the diffusion of messengers that bind/unbind to intracellular components. Quantifying their net transport rate under different conditions, then requires having separate estimates of their free diffusion coefficient and binding/unbinding rates.
arxiv +1 more source
Metamodulation of a spinal locomotor network by nitric oxide [PDF]
, 2004 Flexibility in the output of spinal networks can be accomplished by the actions of neuromodulators; however, little is known about how the process of neuromodulation itself may be modulated.
McLean, DL, Sillar, Keith Thomas
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Xenopus Hybrids Provide Insight Into Cell and Organism Size Control
Frontiers in Physiology, 2018 Determining how size is controlled is a fundamental question in biology that is poorly understood at the organismal, cellular, and subcellular levels. The Xenopus species, X. laevis and X. tropicalis differ in size at all three of these levels.
Romain Gibeaux +4 more
doaj +1 more source