Aging of the vertebrate immune system.

abstract：:When 20-day-old rats are placed on a vitamin A deficient diet (VAD) for a period of 10 weeks, the seminiferous tubules are found to contain only Sertoli cells, a few residual A0, A1 spermatogonia, and preleptotene spermatocytes (PL). The type A1 spermatogonia and PL spermatocytes are arrested in their G2 phase. In VAD...

journal_title：Microscopy research and technique

authors： Ismail N,Morales CR

更新日期：1992-01-01 00:00:00

abstract：:Iris L. is one of the important genus of family Iridaceae, consist of 56 taxa naturally occurred in Turkey. The similarities and variations in the subgenus overlapping the taxonomic positions of the species in the subgenera and needs anatomical assessment especially by microscopic techniques. In this study, the taxono...

journal_title：Microscopy research and technique

authors： Kandemir N,Çelik A,Ullah F,Shah SN,Zaman W

更新日期：2019-06-01 00:00:00

abstract：:The effects of crystal and beam tilt on high-resolution transmission electron microscope (HRTEM) images of planar coherent interfaces were investigated by multislice image simulations. It was found that a beam tilt of 0.5 Bragg angle (theta B) was sufficient to introduce detrimental artifacts into most images of inter...

journal_title：Microscopy research and technique

authors： Howe JM,Rozeveld SJ

更新日期：1992-11-01 00:00:00

abstract：:Tumor necrosis factor (TNF) exists in two bioactive forms, the membrane integrated form and the proteolytically derived soluble cytokine. Both forms of TNF are involved in a variety of different physiological and pathophysiological situations. Here we analyzed different human and mouse TNF-specific reagents for their ...

journal_title：Microscopy research and technique

authors： Gerspach J,Götz A,Zimmermann G,Kolle C,Böttinger H,Grell M

更新日期：2000-08-01 00:00:00

abstract：:The family Scrophulariaceae consists of taxonomically complex genera and species. The delimitation of the taxa within this family is always challenging. In this paper, we studied leaf epidermis anatomical characteristics and its taxonomic significance of four species belonging to four genera of the family Scrophularia...

journal_title：Microscopy research and technique

authors： Ullah F,Ayaz A,Saqib S,Parmar G,Bahadur S,Zaman W

更新日期：2020-09-29 00:00:00

abstract：:This was the first comprehensive pollen micromorphological investigation of lactiferous flora (Apocynaceae) of District Rawalpindi, Pakistan. The pollen morphology of 10 species of the family Apocynaceae was observed and documented using light microscopy and scanning electron microscopy. Pollen was found subspheroidal...

journal_title：Microscopy research and technique

authors： Naz S,Zafar M,Ahmad M,Memon RA,Sultana S,Bahadur S,Ozdemir FA,Siddiq Z,Shah MA

更新日期：2019-09-01 00:00:00

abstract：:This ultrastructural study showed that nonisotopic methanolic hafnium chloride and aqueous lead solution was an excellent new electron stain for enhancing TEM contrasts of fungal and plant cell structures. The ultrastructural definition provided by the new stain was often superior to that provided by conventional stai...

journal_title：Microscopy research and technique

authors： Ikeda K,Inoue K,Kanematsu S,Horiuchi Y,Park P

更新日期：2011-09-01 00:00:00

abstract：:Previous studies reported that intrageneric relationships of genus Veratrum of family Melanthiaceae are controversial and hard to delimit. Therefore, we observed the pollen morphological features of six species in the genus Veratrum in detail using both light microscopy and scanning electron microscopy and investigate...

journal_title：Microscopy research and technique

authors： Hu Z,Zhao Y,Zhao C,Liu J

更新日期：2020-08-01 00:00:00

abstract：BACKGROUND:The use of quality control tool for adulteration of Senna (Cassia aungustifolia) a pharmaceutically very important. They were used for multiple health disorders such as constipation, indigestion, epilepsy, asthma, piles, migraine, and heart problems. Two different species of same family or same genus used co...

journal_title：Microscopy research and technique

authors： Shaheen S,Jaffer M,Khalid S,Khan MA,Hussain K,Butt MM,Rauf Siddiqui A,Ashfaq M,Ahmad M,Zafar M,Khan F

更新日期：2019-10-01 00:00:00

abstract：:This study was designed to investigate patterns of fibrils organization in histochemically stained otoconia. Transmission electron microscope and video imaging were used. These data indicate that otoconia of the chick (Gallus domesticus) inner ear may have central cores in vivo. The data also show that the ultrastruct...

journal_title：Microscopy research and technique

authors： Fermin CD

更新日期：1993-07-01 00:00:00

abstract：:This bibliography is compiled to assist in locating papers related to the application of scanning electron microscopy (SEM) to cerebrospinal-fluid-contacting surfaces in vertebrates. The use of SEM by neuroscientists has continued apace since the publication of the first bibliography in 1980. SEM studies now include m...

journal_title：Microscopy research and technique

authors： Mitchell JA,Ham S

更新日期：1998-04-15 00:00:00

abstract：:To investigate intrinsic physicochemical properties and interactions of three different calcium hydroxide-based medications via means of different analytical methods. Two-commercial premixed medications: TempCanal(TCmx) and ProCalR(PCmx) and powder-form ProCal(PCpw) with glycerin were used. Vibrational modes were anal...

journal_title：Microscopy research and technique

authors： Uslu O,Dikmen G,Orhan EO

更新日期：2020-09-21 00:00:00

abstract：:Anatomical study of leaf xylary vessel elements of Carthamus oxycantha under various intensities of lead (Pb) and nickel (Ni) stress (200, 400, 600, and 800 mg Pb(NO3 )2 , NiCl2 ·6H2 O/kg of the soil) was conducted. The deformations caused due to metal stress were detected using point-based image registration techniqu...

journal_title：Microscopy research and technique

authors： Iqbal T,Shah SK,Ullah F,Mehmood S,Zeb MA

更新日期：2020-07-01 00:00:00

abstract：:Surface ultrastructures of gill filaments and secondary lamellae of Rita rita and Cirrhinus mrigala, inhabiting different ecological habitat, were investigated to unravel adaptive modifications. R. rita is a sluggish, bottom dwelling carnivorous catfish, which inhabits regions of river with accumulations of dirty wate...

journal_title：Microscopy research and technique

authors： Kumari U,Mittal S,Mittal AK

更新日期：2012-04-01 00:00:00

abstract：:The fine structure of the taste buds of circumvallate papillae of two strains of mice was studied by electron microscopy. Mice anesthetized with ketamine were perfused through the heart with a double aldehyde mixture in cacodylate buffer and the tissues embedded in Epon. Semi-serial sections were employed. The morphol...

journal_title：Microscopy research and technique

authors： Murray RG

更新日期：1993-10-15 00:00:00

abstract：:Fluorescence correlation spectroscopy (FCS) has become an increasingly important measurement tool for biological and biomedical investigations, with the capability to assay molecular dynamics and interactions both in vitro and within living cells. Information recovery in FCS requires an accurate characterization and c...

journal_title：Microscopy research and technique

authors： Wu J,Berland K

更新日期：2007-08-01 00:00:00

abstract：:We summarize the molecular phenotype, diagnostic criteria, and the newest advances related to seeking the pathogenic mechanism(s) of sporadic inclusion-body myositis (s-IBM), a muscle disease usually of persons over age 50. On the basis of our research, several processes seem to be important in relation to the still-s...

journal_title：Microscopy research and technique

authors： Askanas V,Engel WK

更新日期：2005-07-01 00:00:00

abstract：:Acquisition of a great number of energy-filtered images in a TEM (EFTEM) around the characteristic signal with a low energy-selecting slit allows display of the electron energy loss (EEL)-spectrum of regions of interest (ROIs) of a sample. These EEL-spectra can be submitted to the different treatments already in use f...

journal_title：Microscopy research and technique

authors： Quintana C,Lechaire JP,Bonnet N,Risco C,Carrascosa JL

更新日期：2001-04-15 00:00:00

abstract：:Intramandibular glands have been poorly studied in polymorphic ants, where the differences between castes were unsufficiently scrutinized. Leaf-cutting ants possess one of the most complex systems of communication and labor division, which is polymorphic well as age polyethism, and makes them an ideal model for the st...

journal_title：Microscopy research and technique

authors： Martins LC,Della Lucia TM,Gonçalves WG,Delabie JH,Zanuncio JC,Serrão JE

更新日期：2015-07-01 00:00:00

abstract：:Red myofibers in mouse soleus muscle have two spatially distinct populations of mitochondria: one where these organelles are disposed in large clusters just inside the sarcolemma and the other situated between the myofibrils. In most cases, the interfibrillar mitochondria (IFM), which are much smaller than the subsarc...

journal_title：Microscopy research and technique

authors： Fujioka H,Tandler B,Haldar SM,Jain MK,Hoppel CL

更新日期：2013-03-01 00:00:00

abstract：:This work provides the details of a simple and reliable method with less damage to prepare electron transparent samples for in situ studies in scanning/transmission electron microscopy. In this study, we use epitaxial VO2 thin films grown on c-Al2 O3 by pulsed laser deposition, which have a monoclinic-rutile transitio...

journal_title：Microscopy research and technique

authors： Moatti A,Sachan R,Prater J,Narayan J

更新日期：2018-11-01 00:00:00

abstract：:Neuropeptides are peptides with profound effects on the nervous system. The function of neuropeptides can be studied in detail in the stomatogastric nervous system (STNS). Neuropeptides are ubiquitously distributed in the STNS and it contains well-studied neural circuits that are strongly modulated by neuropeptides. T...

journal_title：Microscopy research and technique

authors： Skiebe P

更新日期：2003-02-15 00:00:00

abstract：:It is increasingly recognized that neuroepithelial endocrine cells and organoid clusters of these cells termed neuroepithelial bodies are widely distributed in the respiratory tract of vertebrates. This review focuses on the neuroepithelial endocrine system in the airway epithelium of mammals according to observations...

journal_title：Microscopy research and technique

authors： Scheuermann DW

更新日期：1997-04-01 00:00:00

abstract：:The ultrastructure of adult human articular cartilage matrix is reexamined in tissue processed according to recently improved cryotechniques [Studer et al. (1995) J. Microsc., 179:321-332]. In truely vitrified tissue, a network of fine cross-banded filaments (10-15 nm in diameter) with a periodicity characteristic of ...

journal_title：Microscopy research and technique

authors： Hunziker EB,Michel M,Studer D

更新日期：1997-05-15 00:00:00

abstract：:Numerous highly fluorescent macrophages (MPhi), designated "smoker cells," exist in the lungs of smokers and subjects who have quit smoking within 5 years. The brightly fluorescent MPhi, however, are not present in the lungs of never smokers. Some investigators have speculated that the intense fluorescence of the MPhi...

journal_title：Microscopy research and technique

authors： Pauly JL,Allison EM,Hurley EL,Nwogu CE,Wallace PK,Paszkiewicz GM

更新日期：2005-06-01 00:00:00

abstract：:On continuing our studies on head and neck neoplasia, specimens from salivary gland tumors have been explored by using infrared microimaging spectroscopy to discern healthy from neoplastic tissues. Samples with Warthin tumor, epithelial displasia, marginal B-cell lymphoma, low-grade adenocarcinoma, and adenoid cystic ...

journal_title：Microscopy research and technique

authors： Conti C,Ferraris P,Garavaglia M,Giorgini E,Rubini C,Sabbatini S,Tosi G

更新日期：2009-02-01 00:00:00

abstract：:In recent years, the zebrafish Danio rerio has emerged as a powerful model organism for the study of vertebrate embryogenesis. Zebrafish, like other vertebrates, possess pigment cells that arise from two distinct embryonic sources: those of the dermis and epidermis originate from the neural crest, while those that com...

journal_title：Microscopy research and technique

authors： Lister JA

更新日期：2002-09-15 00:00:00

abstract：:The aim of this report was to investigate the ultrastructure and three-dimensional organization of the pleural lymphatic stomata in the adult rabbit costal pleura by electron microscopy. A computer image processing system attached to the scanning electron microscopy was used to get statistical evaluation of the dimens...

journal_title：Microscopy research and technique

authors： Li YY,Li JC

更新日期：2003-10-15 00:00:00

abstract：:Förster resonance energy transfer (FRET) allows one to study interactions between two fluorescently labeled molecules (donors and acceptors) at distances on the order of 5 nm. Many studies have described methods of how to measure the efficiency of FRET. However, few have addressed the question of how fluorescence from...

journal_title：Microscopy research and technique

authors： Neher RA,Neher E

更新日期：2004-06-01 00:00:00

abstract：:This study reports the effects on micromorphology and temperature rise in human dentin using different frequencies of Er:YAG laser. Sixty human dentin fragments were randomly assigned into two groups (n = 30): carious or sound dentin. Both groups were divided into three subgroups (n = 10), according to the Er:YAG lase...

journal_title：Microscopy research and technique

authors： Raucci-Neto W,Pécora JD,Palma-Dibb RG

更新日期：2012-10-01 00:00:00