Results 91 to 100 of about 4,564 (251)

Placental crises: disruptive selection and maternal under‐investment as the foundations of mammalian placental evolution and dysfunction

open access: yesBiological Reviews, EarlyView.
ABSTRACT Among the vertebrates, mammals are notable for the dominance of live birth and placental nutrition. The structural diversity of the mammalian placenta is remarkable, despite sharing a single common ancestor and conserved physiological functions.
Davis Laundon   +5 more
wiley   +1 more source

Characterization of Normal Bone in the Equine Distal Limb with Effective Atomic Number and Electron Density Determined with Single-Source Dual Energy and Detector-Based Spectral Computed Tomography

open access: yesAnimals
Single-source dual energy (SSDECT) and detector-based spectral computed tomography (DBSCT) are emerging technologies allowing the interrogation of materials that have different attenuation properties at different energies.
Janine Steiner   +3 more
doaj   +1 more source

Fecal examination of the equids of Tabriz from the viewpoint of gastrointestinal helminthes infestation [PDF]

open access: yesĀsīb/shināsī-i Darmāngāhī-i Dāmpizishkī, 2008
From July to October 2006, fecal samples were collected from 242 horses and ponies of Tabriz jockey clubs and 119 local equids in order to determine their EPG and parasitic fauna of gastrointestinal helminthes.
Ali Eslami   +2 more
doaj  

Humans are not unique: difficult birth is common in placental mammals

open access: yesBiological Reviews, EarlyView.
ABSTRACT Human childbirth is widely presumed to be uniquely difficult and dangerous compared to birth in other mammals. Tight fetopelvic proportions can result in obstructed labour and contribute to high rates of maternal and neonatal mortality. Ideas summarised under the ‘obstetrical dilemma’ have contributed to this assumption by explaining difficult
Nicole D. S. Grunstra
wiley   +1 more source

Oocyte–cumulus cell interaction: a key factor in early embryo development

open access: yesBiological Reviews, EarlyView.
ABSTRACT The evaluation of oocyte competence is a fundamental step in achieving successful outcomes following assisted reproduction techniques (ART). At present, however, conventional oocyte maturation assessment is carried out by morphological observation, which is a subjective method that does not consider molecular features.
Marc Torres‐Garrido   +2 more
wiley   +1 more source

Human Demonstration Does Not Facilitate the Performance of Horses (Equus caballus) in a Spatial Problem-Solving Task

open access: yesAnimals, 2018
Horses’ ability to adapt to new environments and to acquire new information plays an important role in handling and training. Social learning in particular would be very adaptive for horses as it enables them to flexibly adjust to new environments.
Joan-Bryce Burla   +2 more
doaj   +1 more source

Opportunities for Local Partnerships in Managing Free Roaming Equids (Abstract) [PDF]

open access: yes, 2022
In Modoc County, located in northeastern California, there is a high elevation sage-steppe rangeland ecosystem heavily populated by free roaming equids and managed primarily by the United States Forest Service (USFS) known as the Devil's Garden.
Snell, Laura K.
core  

Characterization and immunogenicity of nanoparticle vaccines displaying embecovirus spike proteins

open access: yesBiotechnology Progress, EarlyView.
Virus‐like particle vaccines displaying spike proteins from OC43, HKU1 A, and HKU1 B were evaluated in mice for their ability to elicit antibodies against the spike proteins from OC43, HKU1 A, HKU1 B, and HKU1 C. Abstract Endemic human coronaviruses OC43 and HKU1 cause widespread respiratory infections and can be associated with severe illness in ...
Peter J. Halfmann   +6 more
wiley   +1 more source

Investigation of Metformin Contamination in Horses: Implications for Environmental Exposure and Doping Control

open access: yesDrug Testing and Analysis, EarlyView.
The widespread use of metformin in human medicine coupled with the detection of metformin in blood and urine samples collected from racehorses has raised concern about the potential for exposure from contaminated stalls. This study describes blood and urine concentrations in horses following intentional exposure of horses to metformin contaminated ...
Megan E. Jacobs   +5 more
wiley   +1 more source

Conservation of genetic resources in horse breeding and major structural damages of sperm during semen cryopreservation in stallions

open access: yesNature Conservation Research: Заповедная наука, 2019
Assisted reproductive technologies have been used in zoos and breeding centres to preserve rare and endangered species of wild animals over the past three decades.
Mikhail M. Atroshchenko   +6 more
doaj   +1 more source

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