Light and electron microscopic studies of Ascobolus stercorarius. II. Ascus and ascospore ontogeny. by Kenneth Wells

Cover of: Light and electron microscopic studies of Ascobolus stercorarius. | Kenneth Wells

Published by University of California Press in Berkeley .

Written in English

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  • Ascobolus stercorarius.,
  • Asci.,
  • Ascospores.

Edition Notes

Bibliography: p. [29]-33.

Book details

SeriesUniversity of California publications in botany, v. 62, University of California publications in botany ;, v. 62.
LC ClassificationsQK623.A8 W45
The Physical Object
Pagination93 p.
Number of Pages93
ID Numbers
Open LibraryOL4771494M
ISBN 100520094204
LC Control Number78182553

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Open Library is an open, editable library catalog, building towards a web page for every book ever published. Light and electron microscopic studies of Ascobolus stercorarius by Kenneth Wells; 1 edition; First published in ; Subjects: Asci, Ascobolus stercorarius, Ascospores, Biologia Geral, Growth & development, Ascomycota.

Light and electron microscopic studies of Ascobolus stercorarius. Ascus and ascospore ontogeny. This book describes the principles of operation of each type of microscope currently available and of use to biomedical and materials scientists explains the mechanisms of image formation (contrast and its enhancement) accounts for ultimate limits on the size of observable details (resolving power and resolution) and finally provides an account of Fourier optical by: Electron microscopic examination, using glutaraldehyde and osmium tetroxide as fixatives, has revealed the existence of a unique structure, the filamentous ascospore inclusion (FAI), in the sporoplasm of developing ascospores ofAscobolus stercorarius.

The FAI, a highly ordered aggregate of 80– å diameter, rigid, filamentous tubules, is examined as to structure and origin; in particular, certain evidence suggesting these structures Cited by: 3.

image processing. Thus, the focus of the book is on the integrated microscope system, with foundations in optical theory but extensions into electronic imaging. Accordingly, the cover shows the conjugate field and aperture planes of the light microscope under the title “Fundamentals of Light Microscopy and Electronic Imaging.”.

Light microscope and Electron microscope Electron microscope Inscientists started to use the electron microscope, Idea of its work depends on using a beam of high speed electrons instead of the light, These electrons are controlled by the electromagnetic lenses, Magnifying power magnifies the objects one million times of their real.

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It uses light to illuminate the objects under view. Electron microscope. An electron microscope is an optical instrument that uses a beam of electrons to make objects larger for a detailed view. An electron microscope allows us to see at these small scales. Electron microscopes work by using an electron beam instead of visible light and an electron detector instead of our eyes.

The behaviour of the division spindle and centrosomal plaques is described in four species of Ascomycetes (Ascobolus immersus, Ascobolus stercorarius, Podospora anserina and Podospora setosa) studied by light and electron microscopy. Two unique features of the kinetical apparatus were observed: presence of centrosomal plaques and intranuclear location of the spindle.

Vol. 62, No. 4, Jul. - Aug., Published by: Taylor & Francis, Ltd. Light and Electron Microscopic Studies of Ascobolus stercorarius. Nuclear Divisions in the Ascus. Light and Electron Microscopic Studies of Ascobolus Light and electron microscopic studies of Ascobolus stercorarius.

book. Nuclear Divisions in the Ascus. On the Origin of Light Elements. A fibrous inclusion body in developing ascospores of Ascobolus stercorarius. Summary Electron microscopic examination, using glutaraldehyde and osmium. Ascobolus furfuraceus Pers.

(= A. stercorarius (Bull.) Schroter), Both species are members of the Pezizales. Introduction: Features of interest Within the ascomycetes and even within a single order such as the Pezizales, there are several different fertilization mechanisms leading to ascocarp development (Webster, ; Alexopoulos et al., ).

Ascobolus: stercorarius: Authority (Bull.) J. Schrvt. Nuclear Division. Cell type: (ME) meiosis. Component: Nuc Div / SPB.

Characteristic State Code Images; Centriole: Light and Electron Microscopic Studies of Ascobolus stercorarius. Ascus and ascospore ontogeny Source of character: Sporocarp. LIGHT AND ELECTRON MICROSCOPIC STUDIES OF ASCOBOLUS STERCORARIUS. NUCLEAR DIVISIONS IN THE ASCUS KENNETH WELLS Department of Botany, University of California, Davis, California SUMMARY A study of nuclear divisions in the asci of Ascobolus stercorarius using acetocarmine for light microscopy and glutaraldehyde-OsO4 fixation.

Electron Microscopy Methods and Protocols. Nasser Hajibagheri, editor"Methods in Molecular Biology", vspiral bound, ISBN See all chapters for this book. Electron Microscopy, 2nd Edition. John J. Bozzola & Lonnie D Russellpp, hardcover, ISBN 0. The purpose of this study is to analyse, by means of Scanning Electron Microscopy (SEM), the validity of the typification of the pollen of Centaurea L.

s.s., carried out by Wagenitz () with. Author(s): Wells,Kenneth; National Science Foundation (U.S.) Title(s): Light and electron microscopic studies of Ascobolus stercorarius.

Ascus and ascuspore ontogeny. Country of Publication: United States Publisher: Berkeley, Univ. of California Press, Description: 93 p.

illus. Language: English ISBN:LCCN. Electron microscope, microscope that attains extremely high resolution using an electron beam instead of a beam of light to illuminate the object of study. Fundamental research by many physicists in the first quarter of the 20th century suggested that cathode rays (i.e., electrons) might be used in.

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Light and Electron Microscope Studies of Host-Parasite Relations in a Hycoparasite Roya Golesorkhi (Submitted in partial fulfillment of the requirements for the degree of Masters of Science) Brock University St.

Catharines, Ontario January, Q R. Ga l esorkh i,   Electron vs. Light Microscopes: Basic Differences. There are not many things that these two microscope types have in common. Both electron and light microscopes are technical devices which are used for visualizing structures that are too small to see with the unaided eye, and both types have relevant areas of applications in biology and the materials sciences.

An Ascobolus stercorarius in uska species han Fungi in nahilalakip ha divisio nga Ascomycota, ngan nga syahan ginhulagway ni Jean Baptiste François `Pierre' Bulliard, ngan ginhatag han pagkayana nga asya nga ngaran ni Joseph Schröter hadton An Ascobolus stercorarius in nahilalakip ha genus nga Ascobolus, ngan familia nga Ascobolaceae.

Waray hini subspecies nga nakalista. Electron microscope observations of Trypanosoma equiperdum. J Parasitol. Feb; 42 (1)– ROTH LE. An electron microscope study of the cytology of the protozoan Euplotes patella.

J Biophys Biochem Cytol. Nov 25; 3 (6)– [PMC free article] BURGOS MH, FAWCETT DW. Studies on the fine structure of the mammalian testis. The main difference between light and electron microscopes is the radiation used to form an image; the ‘light’ and ‘electron’ in the names refer to the radiation being used.

Using visible light as a radiation has several limitations, which the electron microscope lessens. However, light microscopes are much more practical in general use.

Topics 3b,c Electron Microscopy Introduction and History • Characteristic Information Basic Principles • Electron-Solid Interactions • Electromagnetic Lenses • Breakdown of an Electron Microscope • Signal Detection and Display • Operating Parameters Instrumentation • Sample Prep Artifacts and Examples.

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This chapter provides a few simple guidelines for the best alignment of all those components of a light microscope that can be focused. Differences between Light Microscope and Electron Microscope; Light Microscope Electron Microscope; Illuminating source is the Light.

Illuminating source is the beam of electrons. Specimen preparation takes usually few minutes to hours. Specimen preparation takes usually takes few days. Live or Dead specimen may be seen. The light and electron microscope enabled scientists to observe and study the smallest units of life.

The light microscope enabled the viewing of live cells although its magnification and resolution is limited, while the electron microscope enabled the viewing of cells at a higher magnification and resolution but is restricted to dead cells. Light Microscope Vs Electron Microscope.

For the Love of Physics - Walter Lewin - - Duration: Lectures by Walter Lewin. ADVERTISEMENTS: Useful Notes on Electron Microscope. Electron microscope was developed in s.

It is a powerful tool for studying the ultrastructure of cells because it has much greater resolving power than the light microscope (resolving power times that of the light microscope).

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This is a more technical book (ages 12 and up) and spends time discussing the preparation of samples, and the variety of microscopic life found around us.

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The SPB was located on the outer nuclear envelope and appeared either dumbbell- or bar-shaped in G1 through G2 phases. Scanning electron microscope (SEM) The sample is imaged at once, similar to a conventional light microscope, but electrostatic or magnetic lenses are used instead of optical lensesl.

X-rays or secondary electrons induced from single pixels of the sample are detected followed by scanning across the whole sample. Scanning transmission electron. A microscope that uses a beam of electrons instead of light to magnify objects up totimes actual size. Electron microscopes have a much higher resolving power (higher clarity) than light microscopes because of the use of electrons instead of light.

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