Results 51 to 60 of about 146,925 (161)

An arbuscular mycorrhiza from the 407‐million‐year‐old Windyfield Chert identified through advanced fluorescence and Raman imaging

open access: yesNew Phytologist, Volume 249, Issue 1, Page 448-459, January 2026.
Summary Mycorrhizal associations between fungi and plants are a fundamental aspect of terrestrial ecosystems. Mycorrhizas occur in c. 85% of extant plants, yet their geological record remains sparse. Rare fossil evidence from early terrestrial environments offers crucial insights into these ancient symbioses, but visualizing fossil fungi at the ...
Christine Strullu‐Derrien   +7 more
wiley   +1 more source

Histiocitosis de células de Langerghans de la vulva (reporte de un caso)

open access: yesRevista de la Facultad de Ciencias Médicas de Córdoba, 2004
La histiocitosis de células de Langerhans )HCL) es una enfermedad proliferativa que afecta habitualmente a niños. La forma localizarla en vulva de un adulto es de presentación rara.
David Cremonezzi, Mónica Bruno
doaj   +1 more source

Viral modulation of interferon (IFN) responses to african swine fever virus (ASFV) [PDF]

open access: yes, 2011
Tese de mestrado. Biologia (Biologia Humana e Ambiente). Universidade de Lisboa, Faculdade de Ciências, 2011A imunidade inata constitui a primeira resposta dada por um hospedeiro quando atacado por agentes patogénicos. A resposta imune baseia-se em genes
Costa, Emanuel Nery de Oliveira Quartin, 1986-
core  

Bone marrow histology [PDF]

open access: yes, 2009
The bone marrow biopsy after the introduction of the Jamshidi needle has come into a routine practice due to the facilitation to obtain good sample.
Alves, Antonio Correa
core   +2 more sources

Physiological roles of lignins – tuning cell wall hygroscopy and biomechanics

open access: yesNew Phytologist, Volume 248, Issue 6, Page 2674-2706, December 2025.
Summary Lignins constitute the second most abundant carbon‐storing biopolymers in the biosphere. These phenolic polymers accumulate in different concentrations, compositions, and localisations within and between cell wall layers and cell types. Lignins were acquired during plant terrestrialisation 450 million years ago, and the diversification of their
Edouard Pesquet   +3 more
wiley   +1 more source

Apoptosis in the transplanted canine transmissible venereal tumor during growth and regression phases Apoptose no tumor venéreo transmissível canino durante as fases de crescimento e regressão

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2008
Twelve male, mongrel, adult dogs were subcutaneously transplanted with cells originated from two canine transmissible venereal tumors (TVT). The aim was to demonstrate and to quantify the occurrence of apoptosis in the TVT regression. After six months of
F.G.A. Santos   +8 more
doaj   +1 more source

P2 purinoceptors signaling in fibroblasts of rat subcutaneous tissue [PDF]

open access: yes, 2011
Mestrado em Biologia Molecular e CelularO tecido conjuntivo parece estar envolvido na génese de diversas condições patológicas. O aumento da rigidez do tecido conjuntivo, resultante da fibrose, pode constituir um factor importante no mecanismo patogénico
Reis, Carla Patrícia da Silva e Sousa
core   +1 more source

How evolution repeatedly builds complexity: a case study with C4 photosynthesis in Blepharis (Acanthaceae)

open access: yesNew Phytologist, Volume 248, Issue 4, Page 2092-2110, November 2025.
Summary With over 60 parallel origins representing evolutionary replicates, C4 photosynthesis is well‐suited for studying complex trait evolution. However, lineages with diverse C3–C4 intermediate species are scarce, leaving uncertainty in models of C4 evolution.
Matt Stata   +6 more
wiley   +1 more source

Apoptose no tumor venéreo transmissível canino: características morfológicas e evidenciação bioquímica Apoptosis in the canine transmissible venereal tumor: morphological features and biochemical evidence

open access: yesArquivo Brasileiro de Medicina Veterinária e Zootecnia, 2001
Fragmentos de tumor venéreo transmissível canino (TVTC) de ocorrência natural, com localização genital, foram obtidos de cinco animais, machos, adultos, sem raça definida.
F.G.A. Santos   +4 more
doaj   +1 more source

Unlocking grass leaf development: foundations for tunable cereal design

open access: yesNew Phytologist, Volume 248, Issue 4, Page 1655-1676, November 2025.
Summary The grass leaf plays a critical role in global food security, generating the carbon stores in cereal grains, which provide > 50% of global calories. As the global population grows, there is an urgent need to increase food production using fewer resources and to develop more resilient agricultural systems to withstand variable climate conditions
Trisha McAllister   +3 more
wiley   +1 more source

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