Results 71 to 80 of about 6,125,058 (320)

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Emotional valence and contextual affordances flexibly shape approach-avoidance movements

open access: yesFrontiers in Psychology, 2013
Behaviour is influenced by the emotional content – or valence – of stimuli in our environment. Positive stimuli facilitate approach, whereas negative stimuli facilitate defensive actions such as avoidance (flight) and attack (fight).
Ana Carolina eSaraiva   +2 more
doaj   +1 more source

Structured or spontaneous dissemination of DMC techniques in small-scale cotton-base agriculture ? The northern Cameroon case study [PDF]

open access: yes, 2010
The northern Cameroon cotton-based agricultural region, as well as the whole of the western and central African cotton belt is mainly characterised by a cotton based agriculture extension program implemented and monitored by the cotton companies.
Abou Abba, Abdoulaye   +3 more
core  

An extension of the SHARC survey

open access: yes, 2007
We report on our search for distant clusters of galaxies based on optical and X-ray follow up observations of X-ray candidates from the SHARC survey. Based on the assumption that the absence of bright optical or radio counterparts to possibly extended X ...
A. K. Romer   +48 more
core   +2 more sources

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

Eculizumab monotherapy for NMOSD: Data from PREVENT and its open-label extension [PDF]

open access: hybrid, 2021
Sean J. Pittock   +13 more
openalex   +1 more source

Longer Lives?: Understanding the Human Life Extension Possibilities [PDF]

open access: yes, 2017
Over the last few years, ethical and social issues related to life extension have gathered much attention among biologists, medical doctors and philosophers.
Garcia-Barranquero, Pablo
core  

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

Timing of the initiation and duration of the Cretaceous extensional regime in South‐east China: Constraints from growth strata in terrigenous basins

open access: yesThe Depositional Record
There has been no consensus yet regarding the precise initial timing and duration of the late Mesozoic extensional tectonics in the South‐eastern China Block.
Xinqi Yu   +4 more
doaj   +1 more source

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