Results 51 to 60 of about 1,751,937 (284)

Long-Lived Electronic Coherence in Dissipative Exciton-Dynamics of Light-Harvesting Complexes

open access: yes, 2012
The observed prevalence of oscillatory signals in the spectroscopy of biological light-harvesting complexes at ambient temperatures has led to a search for mechanisms supporting coherent transport through larger molecules in noisy environments.
Kramer, Tobias, Kreisbeck, Christoph
core   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

The Biophysics of Lymphatic Transport: Engineering Tools and Immunological Consequences

open access: yesiScience, 2019
Lymphatic vessels mediate fluid flows that affect antigen distribution and delivery, lymph node stromal remodeling, and cell-cell interactions, to thus regulate immune activation.
Meghan J. O'Melia   +2 more
doaj   +1 more source

A multiscale description of growth and transport in biological tissues [PDF]

open access: yesTheoretical and Applied Mechanics, 2007
We study a growing biological tissue as an open biphasic mixture with mass exchange between phases. The solid phase is identified with the matrix of a porous medium, while the fluid phase is comprised of water, together with all the dissolved chemical ...
Grillo A.   +5 more
doaj   +1 more source

Ethane groups modified DNA nanopores to prolong the dwell time on live cell membranes for transmembrane transport

open access: yesFrontiers in Chemistry, 2023
Transmembrane transport, mostly relying on biological channels, is crucial for the metabolic processes of live cells including sensing, signaling, cellular communicating and molecular transport.
Yuan Li   +3 more
doaj   +1 more source

Insulated conducting cantilevered nanotips and two-chamber recording system for high resolution ion sensing AFM. [PDF]

open access: yes, 2014
Biological membranes contain ion channels, which are nanoscale pores allowing controlled ionic transport and mediating key biological functions underlying normal/abnormal living.
Arce, Fernando Teran   +3 more
core   +2 more sources

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

Geometry of unsteady fluid transport during fluid–structure interactions [PDF]

open access: yes, 2007
We describe the application of tools from dynamical systems to define and quantify the unsteady fluid transport that occurs during fluid–structure interactions and in unsteady recirculating flows.
Dabiri, John O.   +3 more
core   +1 more source

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Enhanced reaction kinetics in biological cells

open access: yes, 2008
The cell cytoskeleton is a striking example of "active" medium driven out-of-equilibrium by ATP hydrolysis. Such activity has been shown recently to have a spectacular impact on the mechanical and rheological properties of the cellular medium, as well as
A Ajdari   +33 more
core   +1 more source

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