Results 41 to 50 of about 25,250 (275)

Genetic differentiation of the mitochondrial cytochrome oxidase C subunit I gene in genus Paramecium (Protista, Ciliophora). [PDF]

PLoS ONE, 2013
BACKGROUND: The mitochondrial cytochrome c oxidase subunit I (COI) gene is being used increasingly for evaluating inter- and intra-specific genetic diversity of ciliated protists. However, very few studies focus on assessing genetic divergence of the COI
Yan Zhao, Eleni Gentekaki, Zhenzhen Yi, Xiaofeng Lin   +3 more
doaj   +1 more source

Determination of the presence of 5-methylcytosine in Paramecium tetraurelia. [PDF]

PLoS ONE, 2018
5-methylcytosine DNA methylation regulates gene expression and developmental programming in a broad range of eukaryotes. However, its presence and potential roles in ciliates, complex single-celled eukaryotes with germline-somatic genome specialization ...
Aditi Singh, Adrienne Vancura, Rafal K Woycicki, Daniel J Hogan, Alan G Hendrick, Mariusz Nowacki   +5 more
doaj   +1 more source

Novel insights into the genetic diversity of Balantidium and Balantidium-like cyst-forming ciliates [PDF]

, 2013
Balantidiasis is considered a neglected zoonotic disease with pigs serving as reservoir hosts. However, Balantidium coli has been recorded in many other mammalian species, including primates. Here, we evaluated the genetic diversity of B.
Grim, J Norman, Horak, Ales, Kiyang, John, Levecke, Bruno, Modry, David, Mulama, Martin, Obornik, Miroslav, Petrzelkova, Klara J, Pomajbikova, Katerina, Todd, Angelique   +9 more
core   +4 more sources

Somewhere over the... what? [PDF]

, 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

Role of cilia activity and surrounding viscous fluid on properties of metachronal waves [PDF]

arXiv, 2023
Large groups of active cilia collectively beat in a fluid medium as metachronal waves, essential for some microorganisms motility and for flow generation in mucociliary clearance. Several models can predict the emergence of metachronal waves, but what controls the properties of metachronal waves is still unclear.
arxiv  

Active spheroids in viscosity gradients [PDF]

arXiv, 2023
In this paper, we explore the hydrodynamics of spheroidal active particles in viscosity gradients. This work provides a more accurate modeling approach, in comparison to spherical particles, for anisotropic organisms like Paramecium swimming through inhomogeneous environments, but more fundamentally examines the influence of particle shape on ...
arxiv  

Physiology and metabolism of eukaryotic microalgae involved in aquatic photosymbioses

New Phytologist, Volume 247, Issue 1, Page 71-89, July 2025.
Summary Symbiosis between eukaryotic microalgae and heterotrophic hosts is a widespread, phylogenetically convergent, and ecologically important phenomenon in aquatic ecosystems. Partners include taxonomically diverse microalgae interacting with multicellular or unicellular hosts in marine or freshwater environments.
Daniel P. Yee, Caroline Juery, Gaëlle Toullec, Andrea Catacora‐Grundy, Charlotte Lekieffre, Daniel Wangpraseurt, Johan Decelle   +6 more
wiley   +1 more source

Surrogate GPR139 Agonists Reverse Short‐Term Startle Habituation Impairment in Larval Zebrafish

The FASEB Journal, Volume 39, Issue 10, 31 May 2025.
Startled habituation deficit is a common cognitive symptom of schizophrenia patients. In blocks of repetitive startle stimuli delivery, MK‐801‐induced larval zebrafish showed a non‐habituating behavior to startle stimuli. A recovery on startle habituation occurred with co‐exposure of MK‐801 and GPR139 agonists.
Teck Fong Kow, Siew Ying Mok, Pek Yee Tang, Lor Huai Chong, Satoshi Ogawa   +4 more
wiley   +1 more source

Pemanfaatan Ekstrak Kulit Ubi Jalar Ungu (Ipomea batatas L.) sebagai Bahan Pewarna Alternatif untuk Pengamatan Mikroskopis Paramecium sp. dalam Pembelajaran Biologi

Al-Hayat, 2019
Purple sweet potato (Ipomea batatas L.) is a tuber that has purple meat and skin. The purple color of purple sweet potato is usually used by the community as a food coloring, while the sweet potato skin is considered only waste and disposed of.
Dewi Fatimatuzahro, Dian Ayuning Tyas, Saifullah Hidayat   +2 more
doaj   +1 more source

Phosphoproteins associated with cyclic nucleotide stimulation of ciliary motility in Paramecium [PDF]

, 1990
Permeabilized, MgATP-reactivated cells of Paramecium (models) respond to cyclic AMP and cyclic GMP by increasing forward swimming speed. In association with the motile response, cyclic AMP and 8-bromo-cyclic GMP (8-Br-cyclic GMP) stimulated protein ...
Bonini, Nancy M., Nelson, David L.
core