Results 41 to 50 of about 166,747 (266)

The composition of mixed-species foraging flocks of birds in Kruger National Park, South Africa

open access: yesKoedoe: African Protected Area Conservation and Science, 2016
Mixed-species foraging flocks (MSFFs) of birds can be defined as aggregations of more than two species that actively initiate and continue their association while foraging, without being drawn to a single resource.
Guy Hausler, Kerry Slater
doaj   +1 more source

Varying Expression of Mu and Kappa Opioid Receptors in Cockatiels (Nymphicus hollandicus) and Domestic Pigeons (Columba livia domestica)

open access: yesFrontiers in Genetics, 2020
Avian species have varying analgesic responses to opioid drugs. Some of this variability could be due to extrinsic factors such as administration route or dose.
Samantha L. Fousse   +4 more
doaj   +1 more source

The Avian Neurotransmitter

open access: yesExperimental Biology and Medicine, 1973
SummaryStimulation of the cardioaccelerator nerve (CA) in the isolated chicken heart causes the release of norepinephrine and little epinephrine and increases heart rate significantly, but after beta blockade heart rate was depressed indicating the release of cholinergic agent which could be blocked with atropine.
P D, Sturkie, D W, Poorvin
openaire   +2 more sources

Bioinspired Passive Flow Routing to Mitigate Thrombosis in Prosthetic Heart Valves and Cardiovascular Devices

open access: yesAdvanced Science, EarlyView.
Bioinspired passive flow routing mitigates thrombosis in cardiovascular devices by redirecting a small fraction of forward flow into stagnation‐prone regions. Inspired by avian alula and aircraft slat mechanisms, strategically placed routing channels restore washout around mechanical heart valves, reducing low‐shear exposure by four orders of magnitude
Yevgeniy Kreinin   +8 more
wiley   +1 more source

Effect of maternal zinc supplementation on offsprings hatchability, growth performance and intestinal development in broiler chickens

open access: yesScientific Reports
Maternal diet plays a vital role in the development of the offspring and their post-hatch performance. The present study was conducted to evaluate the effect of supplementary organic zinc to the basal diet of broiler breeder chickens on the bird’s ...
Marappan Gopi   +6 more
doaj   +1 more source

Proinflammatory cytokine responses induced by influenza A (H5N1) viruses in primary human alveolar and bronchial epithelial cells

open access: yesRespiratory Research, 2005
Background Fatal human respiratory disease associated with influenza A subtype H5N1 has been documented in Hong Kong, and more recently in Vietnam, Thailand and Cambodia. We previously demonstrated that patients with H5N1 disease had unusually high serum
Poon LLM   +10 more
doaj   +1 more source

A Pan‐Methylome Framework for Population‐Scale Bacterial Epigenomics

open access: yesAdvanced Science, EarlyView.
A scalable quantitative framework unlocks population‐level comparative epigenomics in bacteria. By transforming site‐level data into standardized traits, this approach reconstructs methylation‐informed phylogenies and defines the core epigenome.
Bin Ma   +22 more
wiley   +1 more source

Avian defensins

open access: yesVeterinary Immunology and Immunopathology, 2008
Modulation of defensin expression may be one way to improve animal health and to reduce zoonotic diseases. Defensins are small, cationic, and amphipathic cysteine-rich antibiotic peptides found in plants, insects, mammals and birds. Whereas alpha- and theta-defensins appear to be absent in birds, several beta-defensins have been isolated from avian ...
van Dijk, A.   +2 more
openaire   +4 more sources

Untangling Inositol (Pyro)Phosphate Biology Through Emerging Technologies

open access: yesAdvanced Science, EarlyView.
Inositol (pyro)phosphates represent a vital class of intracellular messengers that govern multiple biological processes. The last decade has experienced a surge of interest in the functions of this class of signaling molecules, primarily due to the introduction of several innovative analytical technologies.
Adolfo Saiardi   +5 more
wiley   +1 more source

Deltacoronavirus Modulates circRNA cGLIS3 Metabolism to Evade Host Antiviral Response

open access: yesAdvanced Science, EarlyView.
This study reveals that both deltacoronavirus nucleocapsid protein and host RNA binding protein IGF2BP2 promote circular RNA GLIS3 (cGLIS3) biogenesis by binding to GLIS3 pre‐mRNA. The m6A modification‐mediated cGLIS3‐IGF2BP2 interaction weakens RNase L‐mediated degradation of cGLIS3 while facilitates a ubiquitin‐dependent degradation of IGF2BP2, thus ...
Liuyang Du   +10 more
wiley   +1 more source

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