Results 91 to 100 of about 477,042 (311)

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source

Inside-out versus Upside-down: The Origin and Evolution of Metallicity Radial Gradients in FIRE Simulations of Milky Way-mass Galaxies and the Essential Role of Gas Mixing

The Astrophysical Journal
Within the Milky Way (MW), younger stellar populations exhibit steeper (more negative) metallicity radial gradients; the origin of this trend remains debated. The FIRE-2 cosmological simulations of MW-mass galaxies show the same trend as the MW, which in
Russell L. Graf, Andrew Wetzel, Jeremy Bailin, Matthew E. Orr   +3 more
doaj   +1 more source

Towards Drift Correction in Chemical Sensors Using an Evolutionary Strategy [PDF]

, 2010
Gas chemical sensors are strongly affected by the so-called drift, i.e., changes in sensors' response caused by poisoning and aging that may significantly spoil the measures gathered.
Squillero, Giovanni, Ernesto Sanchez, Alberto Paolo Tonda, Tonda, A., Stephano Di Carlo, SANCHEZ SANCHEZ, EDGAR ERNESTO, Giovanni Squillero, Matteo Falasconi, Alberto Scionti, Di Carlo, Stefano, Scionti, A., Sanchez, E., Falasconi, M.   +12 more
core   +1 more source

Biophysical approaches for studying viral entry

FEBS Letters, EarlyView.
Viruses infect all living organisms and have been responsible for major epidemics and pandemics. Their ongoing evolutionary battle with host defenses creates a constant need for improved tools to study viral behavior. Advancing methods to probe viral attachment, fusion, and genome release deepen our understanding of how infections begin and support the
Inbar Yosibash, Raya Sorkin
wiley   +1 more source

Bacterial symbionts support larval sap feeding and adult folivory in (semi-)aquatic reed beetles

Nature Communications, 2020
Symbiotic microbes in insects can enable their hosts to access untapped nutritional resources. Here, the authors show that symbiotic bacteria in reed beetles can provide essential amino acids to sap-feeding larvae and help leaf-feeding adults to degrade ...
Frank Reis, Roy Kirsch, Yannick Pauchet, Eugen Bauer, Lisa Carolin Bilz, Kayoko Fukumori, Takema Fukatsu, Gregor Kölsch, Martin Kaltenpoth   +8 more
doaj   +1 more source

The human gut microbiome across the life course

FEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero, Basak Bahcivanci, Antonietta Hayhoe, Animesh Acharjee, Ezgi Özkurt   +4 more
wiley   +1 more source

Searching for lost nucleotides of the pre-RNA World with a self-refining model of early Earth

Nature Communications, 2018
The nucleotides of RNA appear to be products of evolution. Experimental studies are showing that plausible proto-nucleotides can be formed in simulated early Earth environments.
Nicholas V. Hud
doaj   +1 more source

Neuropeptidergic Systems in Pluteus Larvae of the Sea Urchin Strongylocentrotus purpuratus: Neurochemical Complexity in a “Simple” Nervous System

Frontiers in Endocrinology, 2018
The nervous system of the free-living planktonic larvae of sea urchins is relatively “simple,” but sufficiently complex to enable sensing of the environment and control of swimming and feeding behaviors.
Natalie J. Wood, Teresa Mattiello, Teresa Mattiello, Matthew L. Rowe, Matthew L. Rowe, Lizzy Ward, Lizzy Ward, Margherita Perillo, Maria Ina Arnone, Maurice R. Elphick, Paola Oliveri   +10 more
doaj   +1 more source

Chemical Oscillators in Structured Media

, 2011
Evolution is a characteristic feature of living systems, and many fundamental processes in life, including the cell cycle, take place in a periodic fashion. From a chemistry perspective, these repeating phenomena suggest the question of whether reactions
Pratyush Dayal, Olga Kuksenok, Amitabh Bhattacharya, Vanag, Vladimir K., Balazs, Anna C., Anna C. Balazs, Kuksenok, Olga, Vladimir K. Vanag, Bhattacharya, Amitabh, Epstein, Irving R., Dayal, Pratyush, Irving R. Epstein   +11 more
core   +1 more source

Septin 9 PB domains coordinate centrosome positioning and microtubule acetylation to control epithelial polarity

FEBS Letters, EarlyView.
Septin 9 polybasic domains couple phosphoinositide‐rich membrane binding to centrosome positioning, Golgi organization, and microtubule acetylation to control epithelial polarity. Their loss disrupts this axis, causing centrosome mispositioning, Golgi fragmentation, reduced microtubule acetylation, and polarity inversion via upregulation of the ...
Ting ting Cai, Mohyeddine Omrane, Nassima Benzoubir, Didier Samuel, Ama Gassama‐Diagne   +4 more
wiley   +1 more source