Results 11 to 20 of about 85,498 (248)

Novel mesostructured inclusions in the epidermal lining of Artemia franciscana ovisacs show optical activity [PDF]

open access: yesPeerJ, 2017
Background Biomineralization, e.g., in sea urchins or mollusks, includes the assembly of mesoscopic superstructures from inorganic crystalline components and biopolymers.
Elena Hollergschwandtner   +7 more
doaj   +2 more sources

Uptake of Radionuclides by Bryophytes in the Chornobyl Exclusion Zone

open access: yesToxics, 2023
The “Chernobyl nuclear disaster” released huge amounts of radionuclides, which are still detectable in plants and sediments today. Bryophytes (mosses) are primitive land plants lacking roots and protective cuticles and therefore readily accumulate ...
Brigitte Schmidt   +8 more
doaj   +1 more source

Seed variability of Sisymbrium polymorphum (Murray) Roth (Brassicaceae) across the Central Palaearctic [PDF]

open access: yesPhytoKeys, 2022
This study presents the results of investigation of the micromorphology and variability of Sisymbrium polymorphum seeds collected in 49 localities in the core range and isolated populations of Central Europe, Eastern Europe and Central Asia. In addition,
Agnieszka Rewicz   +7 more
doaj   +3 more sources

Aliskiren Reduces the Adrenal Zona Glomerulosa Apoptosis and Autophagy in Wistar Rats with 2K1C Hypertension

open access: yesInternational Journal of Hypertension, 2020
Hypertension is a disease classified as primary or secondary, manifested not only by elevation of blood pressure but also involved in structural and functional changes of target organs. Renal artery stenosis is a leading factor of secondary hypertension,
Veronica S. de Matos   +12 more
doaj   +1 more source

Subfamily hypostominae: similarities and differences in testicular structure of amazonian fish

open access: yesBMC Zoology, 2022
Background Hypostominae is a subfamily of the family Loricariidae that has a great diversity of species. Accordingly, testicular studies in fish can contribute to the phylogeny and taxonomy of species and to the comparison of reproductive aspects between
Ivana Kerly S. Viana   +7 more
doaj   +1 more source

Prenatal valproic acid-induced autism marmoset model exhibits higher salivary cortisol levels

open access: yesFrontiers in Behavioral Neuroscience, 2022
Individuals with autism spectrum disorder (ASD) are exposed to a variety of stressors owing to their behavioral traits. Cortisol is a hormone typically associated with stress, and its concentration and response to stress are higher in individuals with ...
Madoka Nakamura   +10 more
doaj   +1 more source

Snatching Sundews—Analysis of Tentacle Movement in Two Species of Drosera in Terms of Response Rate, Response Time, and Speed of Movement

open access: yesPlants, 2022
Drosera, Droseraceae, catch prey with sticky tentacles. Both Australian Drosera allantostigma and widespread D. rotundifolia show three types of anatomically different tentacles: short, peripheral, and snap-tentacles.
Caroline Ivesic   +4 more
doaj   +1 more source

The Role of Reactive Oxygen Species (ROS) in the Formation of Extracellular Traps (ETs) in Humans

open access: yesBiomolecules, 2015
Extracellular traps (ETs) are reticulate structures of extracellular DNA associated with antimicrobial molecules. Their formation by phagocytes (mainly by neutrophils: NETs) has been identified as an essential element of vertebrate innate immune defense.
Walter Stoiber   +3 more
doaj   +1 more source

Follicular complex may predict reproductive tactics in siluriform fishes

open access: yesHeliyon, 2023
In this study, we evaluated the morphology and morphometry of the layers that make up the follicular complex surrounding mature oocytes in the six fish species Auchenipterichthys longimanus, Ageneiosus ucayalensis, Hypophthalmus marginatus, Baryancistrus
Ivana Kerly S. Viana   +5 more
doaj   +1 more source

Ultrastructural Immunochemistry [PDF]

open access: yesCold Spring Harbor Protocols, 2008
INTRODUCTIONThe use of colloidal gold technology was undoubtedly the most significant event in the development of immunochemistry. Gold particles are particularly useful for transmission electron microscopy (TEM) studies, because they scatter electrons strongly and even small particles are clearly visible under the electron microscope.
Jeremy N, Skepper, Janet M, Powell
openaire   +2 more sources

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