Results 101 to 110 of about 3,687 (208)

Pulmonary histiocytosis in tree shrews (Tupaia belangeri).

open access: yesLaboratory animal science, 1997
Granulomatous lesions similar to those of pulmonary histiocytosis in rats developed spontaneously in the lungs of captive tree shrews. Incidence peaked in 3-year-old tree shrews. Sex dependency was not observed, and development of the granulomas was unrelated to experimental procedures because the lesions were observed in animals from the breeding ...
Brack, M.   +4 more
openaire   +2 more sources

A Single‐Nucleus Transcriptomic Atlas Reveals Cellular and Genetic Characteristics of Alzheimer's‐Like Pathology in Aging Tree Shrews

open access: yesMedComm, Volume 6, Issue 4, April 2025.
We present a novel Alzheimer's disease (AD) model using naturally aging tree shrews (TSs) that exhibit Alzheimer's‐like pathology (ALP), offering unique insights into human AD progression. Through single‐nucleus RNA sequencing, we mapped the hippocampal transcriptome, revealing key neural progenitor cell differentiation trajectories linked to AD. Cross‐
Liu‐Lin Xiong   +13 more
wiley   +1 more source

Apoptosis and proliferation in the trigeminal placode [PDF]

open access: yes, 2009
The neurogenic trigeminal placode develops from the crescent-shaped panplacodal primordium which delineates the neural plate anteriorly. We show that, in Tupaia belangeri, the trigeminal placode is represented by a field of focal ectodermal thickenings ...
A D’Amico-Martel   +53 more
core   +2 more sources

MHC class I genes of the tree shrew Tupaia belangeri

open access: yesImmunogenetics, 2002
Two MHC class I cDNA sequences from the tree shrew (Tupaia belangeri), Tube-W01 and Tube-W02, have been isolated which are probably derived from classical class I genes. Expression of the tupaia class I genes was investigated in several organs, in particular the brain, in which slightly different amounts of class I transcripts are detectable in ...
Flugge, P.   +3 more
openaire   +3 more sources

Distribution and Host Selection of the Chigger Mite Leptotrombidium rupestre, a Potential Vector of Scrub Typhus, in Southwest China

open access: yesVeterinary Medicine and Science, Volume 11, Issue 2, March 2025.
Based on field surveys in southwest China between 2001 and 2022, this paper retrospectively reports the distribution and host selection of L. rupestre in the region for the first time. A total of 4675 L. rupestre were identified from 28 species of small mammal hosts in 23 of 114 survey sites and it was mainly distributed in higher latitudes (31–33° N ...
Rong Yu   +9 more
wiley   +1 more source

Effects of Gradient Photoperiod and Temperature on Energy Metabolism and Body Composition in Tupaia belangeri chinensis [PDF]

open access: yesJournal of Stress Physiology & Biochemistry, 2013
In order to explore the adaptive changes in energy metabolism and body composition in response to a gradual reduction in both ambient temperature and photoperiod, male adult tree shrews Tupaia belangeri chinensis were raised under the conditions of 30 oC
Zhu, Wanlong   +3 more
doaj  

The spectral transmission of ocular media suggests ultraviolet sensitivity is widespread among mammals [PDF]

open access: yes, 2014
Although ultraviolet (UV) sensitivity is widespread among animals it is considered rare in mammals, being restricted to the few species that have a visual pigment maximally sensitive (λmax) below 400 nm.
Algvere PV   +12 more
core   +1 more source

Latitudinal Variation in the Timing of Nest Predator Activity Is Habitat Specific

open access: yesGlobal Ecology and Biogeography, Volume 34, Issue 1, January 2025.
ABSTRACT Aim The goal of this work was to investigate whether the community of avian nest predators shifts from nocturnal to diurnal with changes in latitude. This hypothesis was formulated 70 years ago, under the rationale that longer day length during the bird breeding season at high latitudes increases opportunities for visual predators.
Léna de Framond   +3 more
wiley   +1 more source

Host and parasite intervality in differentially human‐modified habitats

open access: yesOikos, Volume 2024, Issue 12, December 2024.
Host–parasite interactions are influenced by present and past eco‐evolutionary interactions and the local environment. An ecological community defines the potential host range of each parasite and the potential parasite diversity of each host species.
Cristina Llopis‐Belenguer   +5 more
wiley   +1 more source

Optimizing procedures for ocular radiation injury studies in the tree shrew [PDF]

open access: yesExploration of Targeted Anti-tumor Therapy
Radiation exposure to the eye during cancer treatment can lead to ocular radiation injury (ORI), a devastating condition that can have a profound and permanent impact on vision-related quality of life. Rodent models do not have adequate ocular anatomy to
Lauren A. Dalvin   +17 more
doaj   +1 more source

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