Results 61 to 70 of about 8,636 (179)

Morphology and 18S rDNA gene sequence of Spirostomum minus and Spirostomum teres (Ciliophora: Heterotrichea) from Rio de Janeiro, Brazil

open access: yesZoologia (Curitiba), 2013
Species of Spirostomum Ehrenberg, 1838 are widely used as model organisms in ecological studies of environmental impacts and symbioses between ciliates and human pathogenic bacteria.
Noemi M. Fernandes   +1 more
doaj  

Iron metabolism in the social amoeba Dictyostelium discoideum: A role for ferric chelate reductases

open access: yesEuropean Journal of Cell Biology, 2022
Iron is the most abundant transition metal in all living organisms and is essential for several cellular activities, including respiration, oxygen transport, energy production and regulation of gene expression.
Barbara Peracino   +4 more
doaj  

The planktonic freshwater ciliate Balanion planctonicum (Ciliophora, Prostomatea): A cryptic species complex or a “complex species”?

open access: yesJournal of Eukaryotic Microbiology, Volume 72, Issue 1, January/February 2025.
Abstract The globally distributed ciliate Balanion planctonicum is a primary consumer of phytoplankton spring blooms. Due to its small size (~20 μm), identification and quantification by molecular tools is preferable as an alternative to the laborious counting of specimen in quantitative protargol stains. However, previous sequencing of the 18S rDNA V9
Martina Schalch‐Schuler   +7 more
wiley   +1 more source

Hepato‐Renal Damage of Hyaluronic Acid on the African Catfish (Clarias gariepinus)

open access: yesAquaculture Research, Volume 2025, Issue 1, 2025.
Hyaluronic acid (HA) is a versatile polysaccharide with a broad range of biological, pharmacological, and therapeutic applications due to its anti‐inflammatory properties, low immunogenicity, natural breakdown, compatibility with live tissue, and capacity to promote cell growth and specialization.
Mahmoud S. Sabra   +12 more
wiley   +1 more source

Contractile Vacuole Complex—Its Expanding Protein Inventory [PDF]

open access: yes, 2013
The contractile vacuole complex (CVC) of some protists serves for the osmotic equilibration of water and ions, notably Ca(2+), by chemiosmotic exploitation of a H(+) gradient generated by the organelle-resident V-type H(+)-ATPase. Ca(2+) is mostly extruded, but there is also some reflux into the cytosol via Ca(2+)-release channels.
openaire   +4 more sources

Structure and dynamics of the contractile vacuole complex inTetrahymena thermophila [PDF]

open access: green, 2023
Chao-Yin Cheng   +4 more
openalex   +1 more source

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