PubAg

Main content area

You searched for: Subject "ultrastructure" Remove constraint Subject: "ultrastructure"
Start Over

Search

6,430  Search Results

« Previous | 1 - 20 of 6,430 |
Number of results to display per page

Search Results

1. Correction to: Ultrastructure and secretion of glandular trichomes in species of subtribe Cajaninae Benth (Leguminosae, Phaseoleae)

Author:
De Vargas, Wanderleia; Fortuna-Perez, Ana Paula; Lewis, Gwilym Peter; Piva, Tayeme Cristina; Vatanparast, Mohammad; Machado, Silvia Rodrigues
Source:
Protoplasma 2019 v.256 no.2 pp. 447
ISSN:
0033-183X
Subject:
ultrastructure,   etc   ; Fabaceae; secretion; trichomes;     Show all 4 Subjects
Abstract:
... In the original version of this article unfortunately some symbols did not appear in the plates caused by technical problems of the journal. We apologize for any inconvenience caused. ...
DOI:
10.1007/s00709-018-1313-2

2. Description of Armaparvus languidus n. gen. n. sp. Confirms Ultrastructural Unity of Cutosea (Amoebozoa, Evosea)

Author:
Schuler, Gabriel A.; Brown, Matthew W.
Source:
Thejournal of eukaryotic microbiology 2019 v.66 no.1 pp. 158-166
ISSN:
1066-5234
Subject:
ultrastructure,   etc   ; Amoebozoa; cell membranes; electron microscopy; transcriptome;     Show all 5 Subjects
Abstract:
... The American Type Culture Collection (ATCC) PRA‐29 isolate has a publicly available transcriptome, which has led to its inclusion in recent phylogenomic analyses. The ATCC PRA‐29 isolate was originally identified and deposited as “Pessonella sp.” This taxon branches robustly within the recently discovered clade Cutosea, very distantly related to the clade in which the genus Pessonella is believed ...
DOI:
10.1111/jeu.12640

3. Cryopreservation and characterization of canine preantral follicles

Author:
Jivago, J.L.P.R.; Paulini, F.; Silva, R.C.; Araujo, M.S.; Marinho, A.P.S.; Lucci, C.M.
Source:
Cryobiology 2018 v.81 pp. 34-42
ISSN:
0011-2240
Subject:
ultrastructure,   etc   ; bitches; cryopreservation; freezing; vitrification;     Show all 5 Subjects
Abstract:
... The aim of this study was to define the population, morphological and ultrastructural characteristics of bitch preantral follicles (PAFs) and to compare the effects on the morphology of PAF of two cryopreservation techniques - slow freezing (SF) and vitrification (V) - of bitches' ovarian tissue. The average population (number per ovary) of PAFs was 48,541 ± 18,366, where 94.25% were primordial (4 ...
DOI:
10.1016/j.cryobiol.2018.02.013

4. The exine ultrastructure of Pretricolpipollenites bharadwajii from the Permian of Jordan

Author:
Tekleva, Maria V.; Stephenson, Michael H.; Zavialova, Natalia E.
Source:
Review of palaeobotany and palynology 2019 v.268 pp. 19-28
ISSN:
0034-6667
Subject:
ultrastructure,   etc   ; Permian period; exine; pollen; transmission electron microscopy; Jordan;     Show all 6 Subjects
Abstract:
... Dispersed trisulcate pollen grains of Pretricolpipollenites bharadwajii from the ?latest Permian of Jordan were studied with light, scanning, and transmission electron microscopy. The three sulci are located on the disal side. The median sulcus is usually longer, wider than the other two sulci, and has rounded aperture ends. The exine sculpturing and aperture membrane are scabrate. The ectexine in ...
DOI:
10.1016/j.revpalbo.2019.05.003

5. Morphological, Ultrastructural, Motility and Evolutionary Characterization of Two New Hemistasiidae Species

Author:
Prokopchuk, Galina; Tashyreva, Daria; Yabuki, Akinori; Horák, Aleš; Masařová, Petra; Lukeš, Julius
Source:
Protist 2019 v.170 no.3 pp. 259-282
ISSN:
1434-4610
Subject:
ultrastructure,   etc   ; mitochondria; new genus; new species; phylogeny; protists; vacuoles; Japan;     Show all 8 Subjects
Abstract:
... Until now, Hemistasia phaeocysticola was the only representative of the monogeneric family Hemistasiidae available in culture. Here we describe two new axenized hemistasiids isolated from Tokyo Bay, Japan. Like in other diplonemids, cellular organization of these heterotrophic protists is characterized by a distinct apical papilla, a tubular cytopharynx contiguous with a deep flagellar pocket, and ...
DOI:
10.1016/j.protis.2019.04.001

6. Ultrastructure features of the surface of the gills and the lower pharyngeal jaw of the Tilapia Zilli, redbelly tilapia (Coptodon Zillii, Gervais, 1848)

Author:
Abumandour, Mohamed M. A.
Source:
Anatomia, histologia, embryologia 2019 v.48 no.1 pp. 12-21
ISSN:
0340-2096
Subject:
ultrastructure,   etc   ; Tilapia zillii; gills; palps; pharynx; scanning electron microscopy;     Show all 6 Subjects
Abstract:
... The present investigation was designed to describe the surface ultrastructure of the gill system of tilapia Zilli. The gill system is formed from four gill arches and each gill arch carries a row of gill filaments on its convex border and two rows of the gill rakers on its concave border. The quadrilateral interbranchial septum has elevated part at the level of the third gill arch. By SEM observat ...
DOI:
10.1111/ahe.12406

7. Morphology, zoospore ultrastructure, and molecular position of taxa in the Asterophlyctis lineage (Chytridiales, Chytridiomycota)

Author:
Letcher, Peter M.; Powell, Martha J.; Davis, William J.
Source:
Fungal biology 2018 v.122 no.11 pp. 1109-1123
ISSN:
1878-6146
Subject:
ultrastructure,   etc   ; Chytridiaceae; new genus; new species; zoospores;     Show all 5 Subjects
Abstract:
... The purpose of our research is to investigate morphology, zoospore ultrastructure, and molecular placement of six strains in the Asterophlyctis (Chytridiales) lineage. In previous molecular analyses strain JEL 186, putatively Asterophlyctis sarcoptoides, placed as basal in family Chytriomycetaceae. Recent sampling for chytrids resulted in isolation of five strains (WJD 209, MP 058, JEL 524, JEL 85 ...
DOI:
10.1016/j.funbio.2018.09.002

8. Expanding horizons of cryo-tomography to larger volumes

Author:
Elbaum, Michael
Source:
Current opinion in microbiology 2018 v.43 pp. 155-161
ISSN:
1369-5274
Subject:
ultrastructure,   etc   ; computed tomography; image analysis; organelles; tissues;     Show all 5 Subjects
Abstract:
... The three dimensional ultrastructure of cells and tissues comes to light with tomography. There is an inherent tension between representing molecular detail at the highest possible resolution, on one hand, and visualizing spatial relations between large organelles or even neighboring cells in large volumes, on the other. Together with its advantages for pristine sample preservation, cryo-tomograph ...
DOI:
10.1016/j.mib.2018.01.001

9. Ultrastructural evidence for nutritional relationships between a marine colonial invertebrate (Bryozoa) and its bacterial symbionts

Author:
Karagodina, N.P.; Vishnyakov, A.E.; Kotenko, O.N.; Maltseva, A.L.; Ostrovsky, A.N.
Source:
Symbiosis 2018 v.75 no.2 pp. 155-164
ISSN:
0334-5114
Subject:
ultrastructure,   etc   ; Bryozoa; bacteria; branching; invertebrates; symbionts; symbiosis;     Show all 7 Subjects
Abstract:
... Autozooids of the cheilostome bryozoan Aquiloniella scabra contain rod-like bacteria in the funicular bodies – the complex swellings of the funicular strands. Each funicular body contains symbionts in the central cavity surrounded by a large, synthetically active internal “sheath-cell” (bacteriocyte) and a group of the flat external cells. The tightly interdigitating lobes of these cells form a ca ...
DOI:
10.1007/s13199-017-0516-1
PubMed:
29720781
PubMed Central:
PMC5918527

10. Cocconeis neuquina Frenguelli (Bacillariophyta): emended description, lectotypification, ecology, and geographical distribution

Author:
García, M. Luján; Echazú, Daniela M.; Romero, Oscar E.; Maidana, Nora I.
Source:
Diatom research 2018 v.33 no.2 pp. 219-228
ISSN:
2159-8347
Subject:
ultrastructure,   etc   ; Cocconeis; ecology; geographical distribution; lectotypes; Argentina;     Show all 6 Subjects
Abstract:
... In this article, we examine the type material of Cocconeis neuquina Frenguelli from the type locality in Neuquén province and other samples in southern Santa Cruz province (Patagonia, Argentina). Cocconeis neuquina is a small species with an oval-subcircular to broadly elliptical valve outline. The sternum valve is externally convex, striae are radiate and uniseriate, and areolae are rounded towar ...
DOI:
10.1080/0269249X.2018.1485596

11. Locating macromolecules and determining structures inside bacterial cells using electron cryotomography

Author:
Melia, Charlotte E.; Bharat, Tanmay A.M.
Source:
Biochimica et biophysica acta 2018
ISSN:
1570-9639
Subject:
ultrastructure,   etc   ; bacteria; cell biology; image analysis;     Show all 4 Subjects
Abstract:
... Electron cryotomography (cryo-ET) is an imaging technique uniquely suited to the study of bacterial ultrastructure and cell biology. Recent years have seen a surge in structural and cell biology research on bacteria using cryo-ET. This research has driven major technical developments in the field, with applications emerging to address a wide range of biological questions. In this review, we explor ...
DOI:
10.1016/j.bbapap.2018.06.003
PubMed:
29908328
PubMed Central:
PMC6052677

12. Micro and ultrastructural changes monitoring during decellularization for the generation of a biocompatible liver

Author:
Ahmed, Ebtehal; Saleh, Tarek; Yu, Lina; Kwak, Ho-Hyun; Kim, Byeong-Moo; Park, Kyung-Mee; Lee, Yun-Suk; Kang, Byung-Jae; Choi, Ki-Young; Kang, Kyung-Sun; Woo, Heung Myong
Source:
Journal of bioscience and bioengineering 2019 v.128 no.2 pp. 218-225
ISSN:
1389-1723
Subject:
ultrastructure,   etc   ; deoxyribonucleases; detergents; extracellular matrix; liver; monitoring; octoxynol; proteins; sodium dodecyl sulfate; trypsin;     Show all 10 Subjects
Abstract:
... Decellularization of a whole organ is an attractive process that has been used to create 3D scaffolds structurally and micro-architecturally similar to the native one. Currently used decellularization protocols exhibit disrupted extracellular matrix (ECM) structure and denatured ECM proteins. Therefore, maintaining a balance between ECM preservation and cellular removal is a major challenge. The a ...
DOI:
10.1016/j.jbiosc.2019.02.007

13. Phylogeny of Myxobolidae (Myxozoa) and the evolution of myxospore appendages in the Myxobolus clade

Author:
Liu, Yang; Lövy, Alena; Gu, Zemao; Fiala, Ivan
Source:
International journal for parasitology 2019 v.49 no.7 pp. 523-530
ISSN:
0020-7519
Subject:
ultrastructure,   etc   ; Cypriniformes; Henneguya; Myxobolus; ancestry; appendages; polyphyly; species diversity; spores; transmission electron microscopy;     Show all 10 Subjects
Abstract:
... Genera Myxobolus Bütschli, 1882 and Henneguya Thélohan, 1892 (Myxobolidae) are specious myxozoan genera. They comprise nearly half of overall known myxozoan species diversity. A typical spore feature of Henneguya is the presence of two caudal appendages of the spore valves, which distinguishes them from species of the genus Myxobolus. Several Myxobolus spp., however, were reported to show aberrant ...
DOI:
10.1016/j.ijpara.2019.02.009

14. Comparative Study of Pollen Morphology and Exine Ultrastructure in Tetrads, Octads and Polyads of the Genus Mimosa (Leguminosae)

Author:
Medina-Acosta, Montserrath; Grether, Rosaura; Martínez-Bernal, Angélica; Ramírez-Arriaga, Elia
Source:
Palynology 2019 v.43 no.2 pp. 188-212
ISSN:
1558-9188
Subject:
ultrastructure,   etc   ; Mimosa; Neotropics; Piptadenia; exine; phylogeny; pollen; Central America; Mexico; South America;     Show all 10 Subjects
Abstract:
... This is the first study of exine ultrastructure to be performed in five endemic Mexican Mimosa taxa (M. pringlei var. pringlei, M. calcicola, M. spirocarpa, M. caerulea and M. sousae), one occurring in Mexico and Central America (M. occidentalis), one widely distributed throughout the neotropics (M. setosa var. paludosa), and two in South America (M. irrigua and M. daleoides). Mimosa pollen grains ...
DOI:
10.1080/01916122.2018.1446470

15. Application of atomic force microscopy in food microorganisms

Author:
Liu, Qin; Yang, Hongshun
Source:
Trends in food science & technology 2019 v.87 pp. 73-83
ISSN:
0924-2244
Subject:
ultrastructure,   etc   ; atomic force microscopy; food industry; image analysis; microorganisms; physical properties; physicochemical properties; structure-activity relationships;     Show all 8 Subjects
Abstract:
... Microorganisms play an important role in the food industry. Knowledge of the surface structural and physical properties of food microorganism cells is crucial to gain a detailed understanding of their functions in the natural environment and to explore them efficiently in various food processes. Atomic force microscopy (AFM), as a non-invasive examination tool, has been widely used to image the su ...
DOI:
10.1016/j.tifs.2018.05.010

16. The ant nest “bomber”: Explosive defensive system of the flanged bombardier beetle Paussus favieri (Coleoptera, Carabidae)

Author:
Muzzi, Maurizio; Di Giulio, Andrea
Source:
Arthropod structure & development 2019 v.50 pp. 24-42
ISSN:
1467-8039
Subject:
ultrastructure,   etc   ; Carabidae; ant nests; arthropods; chemical defenses; elytra; fluorescence; quinones; scanning electron microscopy; sclerotization;     Show all 10 Subjects
Abstract:
... Bombardier beetles are famous for their unique ability to explosively discharge hot quinones from their pygidial glands when threatened. Here we provide the first detailed description of the ultrastructure of the defensive gland system of the genus Paussus, the most speciose genus in the ground beetle subfamily Paussinae. Paussine beetles are commonly known as “flanged bombardier beetles” due to t ...
DOI:
10.1016/j.asd.2019.03.001

17. The Pathogen–Host Interface in Three Dimensions: Correlative FIB/SEM Applications

Author:
Weiner, Allon; Enninga, Jost
Source:
Trends in microbiology 2019 v.27 no.5 pp. 426-439
ISSN:
0966-842X
Subject:
ultrastructure,   etc   ; Brucella; Salmonella; Shigella; fluorescence microscopy; host-pathogen relationships; pathogens; scanning electron microscopy; tomography;     Show all 9 Subjects
Abstract:
... Pathogens survive and propagate within host cells through a wide array of complex interactions. Tracking the molecular and cellular events by multidimensional fluorescence microscopy has been a widespread tool for research on intracellular pathogens. Through major advancements in 3D electron microscopy, intracellular pathogens can also be visualized in their cellular environment to an unprecedente ...
DOI:
10.1016/j.tim.2018.11.011

18. Antennal morphology and ultrastructure of male and female Ptinus japonicus Reitter, 1877 (Coleoptera: Ptinidae)

Author:
Wei, Zhao-Ming; Liu, Hong-Xia; Zhang, Heng; Yao, Fu-Jiao; Qiu, Li-Fei; Tian, Ying-Fang; Lian, Zhen-Min
Source:
Oriental insects 2019 v.53 no.2 pp. 212-230
ISSN:
2157-8745
Subject:
ultrastructure,   etc   ; Ptinus; antennae; females; flagellum; males; pedicel; pests; scanning electron microscopy; sensilla; sexual dimorphism;     Show all 11 Subjects
Abstract:
... Ptinus japonicus Reitter is a subversive pest of stored-product throughout the world. Scanning electron microscopy (SEM) was used to observe the antennal morphology and sensilla ultrastructure in both sexes of this pest. The antennae of P. japonicus are filiform that comprised scape, pedicel and flagellum with nine flagellomeres. Six types of sensilla were identified, including Böhm sensilla (Bs), ...
DOI:
10.1080/00305316.2018.1480978

19. Ultrastructural analysis of spores from diverse Bacillales species isolated from Brazilian soil

Author:
de Andrade Cavalcante, Danilo; De‐Souza, Marlene Teixeira; de Orem, Juliana Capela; de Magalhães, Maria Inês André; Martins, Paulo Henrique; Boone, Tyler J.; Castillo, José A.; Driks, Adam
Source:
Environmental microbiology reports 2019 v.11 no.2 pp. 155-164
ISSN:
1758-2229
Subject:
ultrastructure,   etc   ; Brevibacillus; DNA; Lysinibacillus; Paenibacillus; niches; soil; spore-forming bacteria; spores; transmission electron microscopy; Brazil;     Show all 11 Subjects
Abstract:
... Many species in the order Bacillales form a specialized cell type called a spore that is resistant to a range of environmental stresses. Transmission electron microscopy (TEM) reveals that the spore is comprised of a series of concentric shells, surrounding an interior compartment harbouring the spore DNA. The outermost of these shells varies considerably in morphology among species, likely reflec ...
DOI:
10.1111/1758-2229.12713

20. Citrus tangeretin reduces the oxidative stress of the myocardium, with the potential for reducing fatigue onset and myocardial damage

Author:
Kou, Guangning; Wu, Junjie; Liu, Meng; Lin, Li; Xu, Xiaoyu; Zhou, Zhiqin
Source:
Journal of functional foods 2019 v.54 pp. 249-253
ISSN:
1756-4646
Subject:
ultrastructure,   etc   ; Citrus; antioxidants; citrus fruits; enzyme activity; enzymes; mice; myocardium; oxidative stress; protective effect; protocols; swimming;     Show all 12 Subjects
Abstract:
... Tangeretin is a polymethoxylated favone isolated from the peel of citrus fruits that possesses a broad spectrum of pharmacological functions. However, there has been limited information regarding tangeretin’s potential protective impact on the myocardium. As the myocardium is widely recognized as a potential target of oxidative stress induced by physical fatigue, this study aimed to assess tangere ...
DOI:
10.1016/j.jff.2019.01.018