Results 31 to 40 of about 58,954 (218)

Biologia Molecular na Medicina Veterinária: conceitos e avanços

open access: yesMedicina Veterinária, 2011
A descoberta da estrutura do DNA por Watson & Crick (1953) deu inicio a uma nova era na biologia molecular. As ferramentas em biologia molecular têm sido utilizadas para pesquisa em muitos campos da biologia e da medicina.
LC Alves
doaj  

Adaptive value of foot-and-mouth disease virus capsid substitutions with opposite effects on particle acid stability

open access: yesScientific Reports, 2021
Foot-and-mouth disease virus (FMDV) is a picornavirus that exhibits an extremely acid sensitive capsid. This acid lability is directly related to its mechanism of uncoating triggered by acidification inside cellular endosomes.
Flavia Caridi   +7 more
doaj   +1 more source

Membrane Rafts: Portals for Viral Entry

open access: yesFrontiers in Microbiology, 2021
Membrane rafts are dynamic, small (10–200 nm) domains enriched with cholesterol and sphingolipids that compartmentalize cellular processes. Rafts participate in roles essential to the lifecycle of different viral families including virus entry, assembly ...
Inés Ripa   +7 more
doaj   +1 more source

Dental crown morphological variation and heterodonty in carcharhiniform sharks

open access: yesThe Anatomical Record, EarlyView.
Abstract Elasmobranch teeth are highly mineralized structures that constitute the majority of the fossil record for this group. Despite their taxonomic and evolutionary significance, detailed descriptions of dental morphology remain scarce. The order Carcharhiniformes, the most diverse among sharks, comprises 304 valid species that display remarkable ...
Flávia Zanini, Karla D. A. Soares
wiley   +1 more source

Short-term activation of the Jun N-terminal kinase pathway in apoptosis-deficient cells of Drosophila induces tumorigenesis

open access: yesNature Communications, 2018
Jun N-terminal kinase (JNK) is necessary for development in tumours, indicating it may play tumour-promoting roles; however, the experimental analysis of the role of JNK in proliferation is hindered by its pro-apoptotic activity.
Noelia Pinal   +3 more
doaj   +1 more source

Unraveling ovarian histology: The key morphological aspects that spur the development of the Fossa ovarii in equine

open access: yesThe Anatomical Record, EarlyView.
Abstract The equine ovary exhibits unique structural and developmental features that distinguish it from those of other domestic species, including the presence of an ovulation fossa and an inversion of cortical and medullary layers. This study aimed to investigate the morphostructural development of the equine fetal ovary, with particular emphasis on ...
Laura Ver Goltz   +5 more
wiley   +1 more source

Biología del envejecimiento

open access: yesRevista de la Asociación Colombiana de Dermatología y Cirugía Dermatológica, 1994
El envejecimiento es un tema de interés multidisciplinario. Su etio-patogénesis se ha tratado de dilucidar desde hace muchos años, y por ende la manera de retardar su aparición y prevenir la manifestación de enfermedades degenerativas y, en ocasiones ...
María Isabel Barona Cabal
doaj  

Determining the timeline of gonadal and genital differentiation in male and female equine fetuses allows for early detection and intervention in malformations

open access: yesThe Anatomical Record, EarlyView.
Abstract Sexual differentiation in the equine fetus involves coordinated morphogenetic processes that shape both the gonads and the genital ducts. Although the formation of testes and ovaries has been relatively well documented, the temporal dynamics and morphometric patterns of the mesonephric (Wolffian) and paramesonephric (Müllerian) ducts remain ...
Tais Harumi de Castro Sasahara   +4 more
wiley   +1 more source

Cytoskeletal Proteins of Actinobacteria

open access: yesInternational Journal of Cell Biology, 2012
Although bacteria are considered the simplest life forms, we are now slowly unraveling their cellular complexity. Surprisingly, not only do bacterial cells have a cytoskeleton but also the building blocks are not very different from the cytoskeleton that
Michal Letek   +4 more
doaj   +1 more source

Much more than their fangs: Macroscopic anatomy of the brain of Bothrops moojeni Hoge 1966 (Squamata, Serpentes, Viperidae)

open access: yesThe Anatomical Record, EarlyView.
Abstract Neuroanatomical research has progressed considerably in several vertebrate lineages, yet studies of reptilian brain morphology remain markedly underdeveloped. Here we provide the first description of macroscopic brain anatomy and its ontogeny in the viperid Bothrops moojeni, based on a sample of seven individuals.
Paula Araújo   +2 more
wiley   +1 more source

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