Results 71 to 80 of about 124,608 (312)

Scopolamine Induces Deficits in Spontaneous Object-Location Recognition and Fear-Learning in Marmoset Monkeys

open access: yesFrontiers in Pharmacology, 2017
The non-selective muscarinic receptor antagonist scopolamine (SCP) induces memory deficits in both animals and humans. However, few studies have assessed the effects of amnesic agents on memory functions of marmosets – a small-bodied neotropical primate ...
Jonathan L. Melamed   +3 more
doaj   +1 more source

STARVING SNAKES [PDF]

open access: yesJournal of Experimental Biology, 2007
Udgivelsesdato: 19/11 ...
openaire   +2 more sources

Structural Basis of von Willebrand Factor Activation by the Snake Toxin Botrocetin [PDF]

open access: bronze, 2002
Koichi Fukuda   +5 more
openalex   +1 more source

Osteological correlates of the respiratory and vascular systems in the neural canals of Mesozoic ornithurines Ichthyornis and Janavis

open access: yesThe Anatomical Record, EarlyView.
Abstract In birds, the neural canal houses a variety of anatomical structures including the spinal cord, meninges, spinal vasculature, and respiratory diverticula. Among these, paramedullary diverticula and the extradural dorsal spinal vein may leave behind osteological correlates in the form of pneumatic foramina and fossae, and a bilobed geometry of ...
Jessie Atterholt   +5 more
wiley   +1 more source

T. rex cognition was T. rex‐like—A critical outlook on diverging views of the neurocognitive evolution in dinosaurs

open access: yesThe Anatomical Record, EarlyView.
Abstract A recent debate has emerged between Caspar et al. (2024) and Herculano‐Houzel (2023) on inferring extinct dinosaur cognition by estimating brain neuron counts. While thought‐provoking, the discussion largely overlooks the function of cognition, as well as partly neglects the difficulties involved in estimating neuron numbers, which according ...
Thomas Rejsenhus Jensen   +7 more
wiley   +1 more source

Parasitological and immunological diagnoses from feces of captive-bred snakes at Vital Brazil Institute

open access: yesRevista Brasileira de Parasitologia Veterinária
Fecal samples from 56 snakes at the Vital Brazil Institute, in the city of Niterói, Rio de Janeiro, were tested using the sedimentation and flotation techniques to investigate the evolutionary forms of parasites such as helminths and protozoa, and using ...
Janaína Lima de Souza   +9 more
doaj   +1 more source

Snake Genome Sequencing: Results and Future Prospects

open access: yesToxins, 2016
Snake genome sequencing is in its infancy—very much behind the progress made in sequencing the genomes of humans, model organisms and pathogens relevant to biomedical research, and agricultural species.
Harald M. I. Kerkkamp   +5 more
doaj   +1 more source

A detailed redescription of a skeletally immature ‘Redondasaurus’ suggests ontogenetic transformations in the taxon mirror phytosaurian morphological evolution

open access: yesThe Anatomical Record, EarlyView.
Abstract The study of morphological evolution is fundamentally tied to ontogeny, yet studies of these heterochronic processes in the fossil record are rare. Fossils belonging to an ontogenetic series are difficult to assign to an ontogenetic stage due to inconsistent proxies for skeletal ages, challenging to taxonomically assign due to morphological ...
Erika R. Goldsmith, Michelle R. Stocker
wiley   +1 more source

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