Results 31 to 40 of about 13,396 (260)

El tiempo vuela: el uso de aves y otros animales para representar las unidades de tiempo de la cuenta larga maya

open access: yesJournal de la Société des Américanistes, 2017
The zoomorphic images used to represent the different periods that form the Mayan Long Count have never been explained in a global way and their meaning remains poorly understood.
Rogelio Valencia Rivera
doaj   +1 more source

Characterization of the Skin Microbiota of the Cane Toad Rhinella cf. marina in Puerto Rico and Costa Rica

open access: yesFrontiers in Microbiology, 2018
Rhinella marina is a toad native to South America that has been introduced in the Antilles, likely carrying high loads of microorganisms, potentially impacting local community diversity.
Juan G. Abarca   +14 more
doaj   +1 more source

Investigating the Antimicrobial Activity of Anuran Toxins

open access: yesMicroorganisms
Anurans, commonly known as frogs and toads, comprise a diverse group of amphibians distributed across all continents except Antarctica. This manuscript provides a detailed overview of the global anuran fauna, emphasizing their biology, remarkable ...
Manuela B. Pucca   +10 more
doaj   +1 more source

Importance of Spring Habitats for Amphibians: The Case of Estavelle Ecotones in the Classical Karst Region

open access: yesAnimals
Springs are ecotones between groundwater and surface water, important for a variety of both surficial and subterranean organisms. However, their use by amphibians has been poorly assessed.
Damiano Brognoli   +10 more
doaj   +1 more source

Avidin is evolutionarily conserved in fish but dispensable for development and resistance against Streptococcus agalactiae in zebrafish

open access: yesFEBS Open Bio, EarlyView.
The presence of biotin‐binding avidin proteins in fish and their biological significance are poorly characterized. We cataloged fish avidins and demonstrate that they are widely present and evolutionarily conserved. We created avd knockout zebrafish and show that zebavidin is dispensable for development and that resistance of avd knockout embryos in ...
Anni K. Saralahti   +5 more
wiley   +1 more source

Comparative Analysis of Hydrophilic Ingredients in Toad Skin and Toad Venom Using the UHPLC-HR-MS/MS and UPLC-QqQ-MS/MS Methods Together with the Anti-Inflammatory Evaluation of Indolealkylamines

open access: yesMolecules, 2018
Toad skin and toad venom, as two kinds of Chinese medicine, are prepared from Bufo bufo gargarizans Cantor and Bufo melanostictus Schneider. However, they display distinct properties in traditional application, and the hydrophilic ingredients are the ...
Yu Zhang   +9 more
doaj   +1 more source

Modulation of Trace Metal Accumulation in the Liver and Intestine of Amphibian Host Sclerophrys regularis by the Enteric Parasite Cosmocerca spp. Sampled in Lagos Metropolis, Nigeria

open access: yesJournal of Basic and Applied Zoology, 2022
Background Recent studies have shown parasites as accumulation indicators that give critical information about the bioavailability of pollutants. To further buttress parasites in the assessment of metal sink potentials, the parasite Cosmocerca sp.
Okechukwu Martin Okeagu   +4 more
doaj   +1 more source

A Depolarizing Leak in Sodium Bicarbonate Cotransporter NBCe1 Causes Brain Edema

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives SLC4A4 encodes electrogenic sodium bicarbonate cotransporter NBCe1, prominently expressed in kidney and brain. Recessive loss‐of‐function variants in SLC4A4 cause proximal renal tubular acidosis, no brain edema. In the brain, NBCe1 is expressed by astrocytes, where it regulates pH and mediates astrocyte volume changes.
Quinty Bisseling   +16 more
wiley   +1 more source

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