Results 71 to 80 of about 27,378 (258)

Modulation of a sustained calcium current by intracellular pH in horizontal cells of fish retina. [PDF]

open access: yes, 1993
A sustained high voltage-activated (HVA), nifedipine- and cadmium-sensitive calcium current and a sustained calcium action potential (AP) were recorded from horizontal cells isolated from catfish retina.
Copenhagen, DR, Dixon, DB, Takahashi, K
core  

Somewhere over the... what? [PDF]

open access: yes, 2016
In order to defend his controversial claim that observation is unaided perception, Bas van Fraassen, the originator of constructive empiricism, suggested that, for all we know, the images produced by a microscope could be in a situation analogous to that
Gava, Alessio
core   +2 more sources

The Imbalance of Nature: The Role of Species Environmental Responses for Community Stability

open access: yesEcology Letters, Volume 28, Issue 10, October 2025.
This study shows that the distribution of species' fundamental responses to environmental change, quantified by a new metric, imbalance, is a key driver of ecological stability. In a large microcosm experiment, lower imbalance predicted greater temporal stability, independently of species richness. Our findings highlight the predictive power of species'
Francesco Polazzo   +3 more
wiley   +1 more source

When the path is never shortest: a reality check on shortest path biocomputation

open access: yes, 2017
Shortest path problems are a touchstone for evaluating the computing performance and functional range of novel computing substrates. Much has been published in recent years regarding the use of biocomputers to solve minimal path problems such as route ...
A Adamatzky   +28 more
core   +1 more source

Animals and Fungi are Each Other's Closest Relatives: Congruent Evidence from Multiple Proteins [PDF]

open access: yes, 1993
Phylogenetic relationships among plants, animals, and fungi were examined by using sequences from 25 proteins. Four insertions/deletions were found that are shared by two of the three taxonomic groups in question, and all four are uniquely shared by ...
Baldauf, S.L., Palmer, J.D.
core   +2 more sources

Study on the role of microtubules related to the nuclear behaviors during conjugation of paramecium caudatum [PDF]

open access: yes, 2002
In most organisms, microtubules are involved in the migration of the pronuclei during fertilization. Fertilization process of Paramecium caudatum includes two stages of nuclear migration. One is a selection of meiotic products.
Nakajima Yuka, 仲島 由佳
core  

The Mechanisms of Codon Reassignments in Mitochondrial Genetic Codes [PDF]

open access: yes, 2007
Many cases of non-standard genetic codes are known in mitochondrial genomes. We carry out analysis of phylogeny and codon usage of organisms for which the complete mitochondrial genome is available, and we determine the most likely mechanism for codon ...
A Reyes   +74 more
core   +4 more sources

Biodiversity modulates the cross‐community scaling relationship in changing environments

open access: yesEcology Letters, Volume 28, Issue 9, September 2025.
Organismal abundance typically declines with increasing body size, with metabolic theory predicting a universal size–abundance slope of –0.75. Using protist microcosms across gradients of species richness, temperature and time, we found that while the expected slope is broadly supported, it is not invariant. Warming and biodiversity interacted to alter
Vojsava Gjoni   +6 more
wiley   +1 more source

Comparative Genomic Analysis of Holospora spp., Intranuclear Symbionts of Paramecia

open access: yesFrontiers in Microbiology, 2018
While most endosymbiotic bacteria are transmitted only vertically, Holospora spp., an alphaproteobacterium from the Rickettsiales order, can desert its host and invade a new one.
Sofya K. Garushyants   +11 more
doaj   +1 more source

A signal transduction blind spot: the function of adenylyl cyclase transmembrane domains

open access: yesThe FEBS Journal, Volume 292, Issue 17, Page 4477-4486, September 2025.
Transmembrane adenylyl cyclases (tmACs) are essential for synthesising the universal second messenger cyclic AMP. All tmACs share a common topology that includes a large 12‐helix transmembrane (TM) domain. This domain accounts for ~ 35% of the coding sequence but its function is still an open question.
Ryan S. Dowsell, Matthew G. Gold
wiley   +1 more source

Home - About - Disclaimer - Privacy