Electron microscopical observations on the effects of sera from two species of Catostomus on the tegument of Hunterella nodulosa (Cestoidea: Caryophyllidea)

1988 ◽  
Vol 66 (5) ◽  
pp. 1191-1196 ◽  
Author(s):  
Min-Min Li ◽  
H. P. Arai
Keyword(s):  
Electron Micrographs ◽  
Body Wall ◽  
The Body ◽  
Transmission Electron Micrographs ◽  
Catostomus Commersoni ◽  
Transmission Electron ◽  
Catostomus Catostomus ◽  
Electron Microscopical ◽  
Scanning Electron

The effects of sera from Catostomus catostomus and Catostomus commersoni on Hunterella nodulosa incubated in different concentrations for different periods of time are presented. Scanning electron and transmission electron micrographs illustrate the process and extent of lysis of the body wall of the tapeworm. Except in minor details, the lytic damage appears similar to that reported for other cestodes.

The ultrastructure of the epidermis of the redia and cercaria of Parorchis acanthus, Nicoll. A study by scanning and transmission electron-microscopy

Parasitology ◽  
1971 ◽  
Vol 62 (3) ◽  
pp. 479-488 ◽  
Author(s):  
Gwendolen Rees
Keyword(s):  
Electron Micrographs ◽  
Technical Assistance ◽  
Ventral Surface ◽  
The Body ◽  
Muscle Fibres ◽  
Scanning Electron Micrographs ◽  
Large Area ◽  
Transmission Electron ◽  
Parorchis Acanthus ◽  
Scanning Electron

Scanning electron-micrographs have shown the covering of microvilli on the surface of the redia of Parorchis acanthus. In the contracted state the elongated microvilli with bulbous extremities seen in the surface grooves may be the result of compression. The surface of the epidermis of the cercaria is smooth on a large area of the ventral surface and lattice-like with microvilli, laterally, anteriorly, dorsally and on the tail. The spines on the body can be withdrawn into sheaths by the contraction of muscle fibres inserted into the basement lamina below each spine.I would like to express my sincere gratitude to Dr I. ap Gwynn of this department for preparing the scanning electron-micrographs and the School of Engineering Science, University of North Wales, Bangor for the use of their stereoscan. I should also like to thank Mr M. C. Bibby for technical assistance and Professor E. G. Gray and Dr W. Sinclair for assistance with the transmission electron-micrographs.

Ultrastructure and cytology of pycnia, aecia, and aeciospores of Gymnosporangium clavipes

1975 ◽  
Vol 53 (10) ◽  
pp. 972-977 ◽  
Author(s):  
Frank Kozar ◽  
Hans J. Netolitzky
Keyword(s):  
Cell Wall ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Light Microscopy ◽  
Electron Micrographs ◽  
Transmission Electron Micrographs ◽  
Dense Cytoplasm ◽  
Transmission Electron ◽  
Inner Surface ◽  
Scanning Electron

Aeciospores of Gymnosporangium clavipes Cooke & Peck have a surface characterized by a dense covering of baculate projections. Transmission electron micrographs (TEM) reveal a thick non-striated cell wall and a dense cytoplasm. Peridial cells have an inner surface studded with clavate projections. Scanning electron microscope (SEM) microgaphs confirmed earlier light microscopy studies of the existence of fiexious hyphae.

Ultrastructure of the soil fungus, Geomyces pannorus

1984 ◽  
Vol 42 ◽  
pp. 738-739
Author(s):  
J. A. Traquair ◽  
E. G. Kokko
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Fine Structure ◽  
Low Temperatures ◽  
Soil Fungus ◽  
Organic Soils ◽  
Anatomical Studies ◽  
Transmission Electron ◽  
Electron Microscopical ◽  
Scanning Electron

With the advent of improved dehydration techniques, scanning electron microscopy has become routine in anatomical studies of fungi. Fine structure of hyphae and spore surfaces has been illustrated for many hyphomycetes, and yet, the ultrastructure of the ubiquitous soil fungus, Geomyces pannorus (Link) Sigler & Carmichael has been neglected. This presentation shows that scanning and transmission electron microscopical data must be correlated in resolving septal structure and conidial release in G. pannorus.Although it is reported to be cellulolytic but not keratinolytic, G. pannorus is found on human skin, animals, birds, mushrooms, dung, roots, and frozen meat in addition to various organic soils. In fact, it readily adapts to growth at low temperatures.

scholarly journals Identifying Atoms in High Resolution Transmission Electron Micrographs Using a Deep Convolutional Neural Net

2018 ◽  
Vol 24 (S1) ◽  
pp. 512-513 ◽  
Author(s):  
Jakob Schiøtz ◽  
Jacob Madsen ◽  
Pei Liu ◽  
Ole Winther ◽  
Jens Kling ◽  
...  
Keyword(s):  
High Resolution ◽  
Electron Micrographs ◽  
Transmission Electron Micrographs ◽  
Neural Net ◽  
Transmission Electron

scholarly journals Studies on the male and female copulatory apparatus of Trichuris globulosa (Nematoda, Trichuridae)

2007 ◽  
Vol 44 (4) ◽  
pp. 151-156 ◽  
Author(s):  
H. Kaur ◽  
C. Duggal
Keyword(s):  
Body Wall ◽  
Posterior Part ◽  
Male Body ◽  
Male And Female ◽  
Copulatory Apparatus ◽  
Electron Microscopical ◽  
Scanning Electron

AbstractThe process of copulation in Trichuris globulosa (see Linstow, 1901) Ransom, 1911 has been studied using morphological, histological and scanning electron microscopical techniques (Keilley et al., 1973). The ventral coiling of the posterior part of the male body around the female is achieved by specialized muscles of the ventral body-wall. The single simple pointed spicule emerges with the everting cirrus and acquires a J-shape. The spicule may help in keeping apart the cuticular brim of the non-spiny noneversible part of the vagina during insemination. The cloacal tube is long with a detached internal cuticle which is eversible to the outside as a cirrus. Eversion is brought about by the protrusion of the spicule and contraction of the muscles of the spicule pouch. During eversion part of the proximal cloacal tube is also extruded and forms the globular part of the cirrus. The globular part is covered with spines, which may help in retaining the male and female in copula. The vagina is differentiated into the proximal vagina uterine and distal vagina vera. The vagina vera has a distal eversible spiny part and a proximal noneversible unarmed part. In Trichuris globulosa, the vagina vera is shorter than the spicule.

Composition and Microstructure of a Natural Nano-Structure Mineral: Six-Ring Rock

2011 ◽  
Vol 295-297 ◽  
pp. 869-872
Author(s):  
Qing Shan Li ◽  
Xin Wang ◽  
Jun Liu ◽  
Guang Zhong Xing
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Energy Dispersive Spectrometer ◽  
The Body ◽  
X Ray Diffraction ◽  
Nano Structure ◽  
X Ray ◽  
Transmission Electron ◽  
Nano Size ◽  
Scanning Electron

Six-ring Rock is widely used as containers of water and additives to produce health care products. In this paper, the composition and microstructure of Six-ring Rock have been investigated by using scanning electron microscopy, energy dispersive spectrometer, transmission electron microscopy, x-ray diffraction and other technologies. Results show that Six-ring Rock is composed of CaMg(CO3)2, SiO2 and KAlSi3O8. Fe atoms exist in CaMg(CO3)2 by replacing Mg atoms. Six-ring Rock shows nano-size lamellar and acerose microstructures on the surface, and nano-size monocrystals in the body. Six-ring Rock is a natural nano structure mineral.

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