Results 51 to 60 of about 13,122 (267)

Morphometric analysis of postnatal lung development in the gray short‐tailed opossum (Monodelphis domestica): An ultrastructural study

open access: yesThe Anatomical Record, EarlyView.
Abstract An ultrastructural morphometric analysis of the postnatal development of the lung in the gray short‐tailed opossum (Monodelphis domestica) has been conducted to evaluate the morphofunctional status of this poorly developed marsupial lung immediately following parturition.
Kirsten Ferner
wiley   +1 more source

Parasite-host interaction between ectoparasites (Ixodida & Siphonaptera) and common opossum Didelphisaurita Wied-Neuwied, 1826 (Mammalia: Didelphimorphia), on the mainland and on Santa Catarina coastal islands, Southern Brazil [PDF]

open access: yesBiotemas, 2007
This is the first study about the ecological interaction between the ectoparasites and marsupials of the Didelphis genus and the second one about mammals in Santa Catarina State. Three insular populations and a mainland population were sampled. The fleas
Maurício E. Graipel   +4 more
doaj  

Dual‐Responsive Nanorobot‐Based Marsupial Robotic System for Intracranial Cross‐Scale Targeting Drug Delivery [PDF]

open access: bronze, 2023
Junfeng Wu   +8 more
openalex   +1 more source

Beyond mammals: the evolution of chewing and other forms of oropharyngeal food processing in vertebrates

open access: yesBiological Reviews, EarlyView.
ABSTRACT Oropharyngeal food processing exhibits a remarkable diversity among vertebrates, reflecting the evolution of specialised ‘processing centres’ associated with the mandibular, hyoid, and branchial arches. Although studies have detailed various food‐processing strategies and mechanisms across vertebrates, a coherent and comprehensive terminology ...
Daniel Schwarz   +6 more
wiley   +1 more source

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

Titin Is Present in the Elastic Tethers That Connect Separating Anaphase Chromosomes in Crane‐Fly Spermatocytes

open access: yesCytoskeleton, EarlyView.
ABSTRACT Elastic tethers connect telomeres of separating chromosomes in anaphase of animal cells. Immunofluorescence staining of titin in crane‐fly spermatocytes, using 4 different antibodies, shows that the giant elastic protein titin seems to be a component of mitotic tethers: titin “strands” extend between separating chromosomes, connecting their ...
Demetra Economopoulos   +5 more
wiley   +1 more source

Dynamic expression of lamin B1 during adult neurogenesis in the vertebrate brain

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background In mammals, specific brain regions such as the dentate gyrus (DG) of the hippocampus and the subventricular zone (SVZ) of the lateral ventricles harbor adult neural stem/progenitor cells (ANSPCs) that give rise to new neurons and contribute to structural and functional brain plasticity.
Diana Zhilina   +12 more
wiley   +1 more source

Small Mammals as Carriers/Hosts of Leptospira spp. in the Western Amazon Forest

open access: yesFrontiers in Veterinary Science, 2020
Leptospira is a bacteria that causes leptospirosis and is transmitted through water, soil, or mud that is contaminated by the urine of infected animals. Although it is mainly associated with the urban environment, Leptospires also circulate in rural and ...
Luciana dos Santos Medeiros   +12 more
doaj   +1 more source

Ontogeny of RSPO1, FOXL2, and RUNX1 during ovarian differentiation in the marsupial tammar wallaby

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background RSPO1 and FOXL2 are female sex‐determining genes involved in the differentiation and organization of the ovary in some eutherian mammals. Mutations or loss of function of these genes are associated with partial to full sex reversal in mice, humans, and goats.
Monika R. Paranjpe   +3 more
wiley   +1 more source

Anatomy of the heart and coronary blood supply of the white-eared opossum (Didelphis albiventris) [PDF]

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia
Although the white-eared opossum is frequently observed in both rural and urban environments, there is little anatomical knowledge about this marsupial species. To our knowledge, there are no descriptions of its heart anatomy. Thus, the aim of this study
L.C. Oliveira   +6 more
doaj   +1 more source

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