Results 21 to 30 of about 85,498 (248)

Plasmolysis: Loss of Turgor and Beyond

open access: yesPlants, 2014
Plasmolysis is a typical response of plant cells exposed to hyperosmotic stress. The loss of turgor causes the violent detachment of the living protoplast from the cell wall. The plasmolytic process is mainly driven by the vacuole.
Ingeborg Lang   +3 more
doaj   +1 more source

Ultrastructure Organization of Human Trabeculae Assessed by 3D sSAXS and Relation to Bone Microarchitecture. [PDF]

open access: yesPLoS ONE, 2016
Although the organization of bone ultrastructure, i.e. the orientation and arrangement of the mineralized collagen fibrils, has been in the focus of research for many years for cortical bone, and many models on the osteonal arrangement have been proposed,
Marios Georgiadis   +6 more
doaj   +1 more source

Endocytosis and Digestion in Carnivorous Pitcher Plants of the Family Sarraceniaceae

open access: yesPlants, 2019
Highly evolved carnivorous plants secrete digestive enzymes for degradation of trapped animals and absorb whole macromolecules from their prey by means of endocytosis.
Marianne Koller-Peroutka   +5 more
doaj   +1 more source

Evaluation of metal contamination effects in piranhas through biomonitoring and multi biomarkers approach

open access: yesHeliyon, 2020
The present field study aimed to assess the water quality of the Itacaiúnas River, located at the eastern part of the Brazilian Amazon, using water's physicochemical parameters, ecological risk assessment in sediments, biomarkers and metal ...
Caroline da Silva Montes   +4 more
doaj   +1 more source

Ultrastructure of osteoblastoma [PDF]

open access: yesCancer, 1977
The ultrastructure of three cases of osteoblastoma is described. The osteoblasts resemble normal osteoblasts with a few exceptions: irregular, indented nuclei, and occasional mitochondria with curved cristae and electron-lucent areas. The osteocytes and osteoclasts basically resemble their normal counterparts.
openaire   +2 more sources

Ultrastructure of Lipoma [PDF]

open access: yesCancer, 1982
Eleven benign lipogenic tumors comprising ten ordinary lipomas and one fibroblastic lipoma were studied by light and electron microscopy. The former, which contained only a few inconspicuous septa, were composed of univacuolar mature adipocytes. No young forms of adipocytic differentiation were seen reflecting the slow growth of the ordinary lipomas ...
Y H, Kim, L, Reiner
openaire   +2 more sources

Lamina Cell Shape and Cell Wall Thickness Are Useful Indicators for Metal Tolerance—An Example in Bryophytes

open access: yesPlants, 2021
Bryophytes are widely used to monitor air quality. Due to the lack of a cuticle, their cells can be compared to the roots of crop plants. This study aimed to test a hypothetical relation between metal tolerance and cell shape in biomonitoring mosses ...
Katharina Petschinger   +3 more
doaj   +1 more source

Ultrastructure of the esthesioneuroblastoma [PDF]

open access: yesCancer, 1976
A tumor in the anatomic location and with the light microscopic appearance of an esthesioneuroblastoma was examined with the electron microscope. Secretory-type granules, cytoplasmic fibrils, and microtubules similar to those described in neuroblastomas were found in many of the tumor cells, which supports an origin from the sympathetic autonomic ...
R Y, Osamura, G, Fine
openaire   +2 more sources

Diethylcarbamazine Reduces Chronic Inflammation and Fibrosis in Carbon Tetrachloride- (CCl4-) Induced Liver Injury in Mice

open access: yesMediators of Inflammation, 2014
This study investigated the anti-inflammatory effects of DEC on the CCl4-induced hepatotoxicity in C57BL/6 mice. Chronic inflammation was induced by i.p. administration of CCl4 0.5 μL/g of body weight through two injections a week for 6 weeks. DEC (50 mg/
Sura Wanessa Santos Rocha   +9 more
doaj   +1 more source

Oxidative stress mediated by gyrophoric acid from the lichen Umbilicaria hirsuta affected apoptosis and stress/survival pathways in HeLa cells

open access: yesBMC Complementary and Alternative Medicine, 2019
Background Lichens produce a huge diversity of bioactive compounds with several biological effects. Gyrophoric acid (GA) is found in high concentrations in the common lichen Umbilicaria hirsuta, however evidence for biological activity was limited to ...
Michal Goga   +6 more
doaj   +1 more source

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