Filtrar la búsqueda

  • Libros (29)

a

Intervalo de precios personalizado (EUR)

a

Akai h (29 resultados)

  • Idioma: Inglés

    Editorial: Plenum Pub Corp

    0306409232 / 9780306409233

    • Tapa dura

    Librería: -OnTimeBooks-, Phoenix, AZ, Estados Unidos de America-OnTimeBooks-

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Usado - Aceptable

    EUR 48,62

     Gastos de envío gratis 
    Se envía dentro de Estados Unidos de America

    Cantidad disponible: 1 disponible

    Condición: good. A copy that has been read, remains in good condition. All pages are intact, and the cover is intact. The spine and cover show signs of wear. Pages can include notes and highlighting and show signs of wear, and the copy can include "From the library of" labels or previous owner inscriptions. 100% GUARANTEE! Shipped with delivery confirmation, if you're not satisfied with purchase please return item! Ships via media mail.…

  • Editorial: Yamada Science Foundation, Japan, 1993

    • Tapa dura

    Librería: Karl Theis, Torrance, CA, Estados Unidos de AmericaKarl Theis

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Usado

    EUR 27,69

    Envío por EUR 5,16 
    Se envía dentro de Estados Unidos de America

    Cantidad disponible: 1 disponible

    Añadir al carrito

    Hardcover. Condición: Like New. Estado de la sobrecubierta: Very Good +. A LIKE NEW UNMARKED COPY. 571 pages.

  • Idioma: Inglés

    Editorial: Springer, 1982

    0306409232 / 9780306409233

    • Tapa dura
    • Primera edición

    Librería: Better World Books Ltd, Dunfermline, Reino UnidoBetter World Books Ltd

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Usado - Bueno

    EUR 49,84

    Envío por EUR 5,99 
    Se envía de Reino Unido a Estados Unidos de America

    Cantidad disponible: 1 disponible

    Condición: Very Good. 1st Edition. Former library copy. Pages intact with possible writing/highlighting. Binding strong with minor wear. Dust jackets/supplements may not be included. Includes library markings. Stock photo provided. Product includes identifying sticker. Better World Books: Buy Books. Do Good. …

  • Idioma: Inglés

    Editorial: Plenum Pub Corp

    0306409232 / 9780306409233

    • Tapa dura

    Librería: Phatpocket Limited, Waltham Abbey, HERTS, Reino UnidoPhatpocket Limited

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Usado - Aceptable

    EUR 44,73

    Envío por EUR 12,75 
    Se envía de Reino Unido a Estados Unidos de America

    Cantidad disponible: 1 disponible

    Condición: Good. Your purchase helps support Sri Lankan Children's Charity 'The Rainbow Centre'. Ex-library, so some stamps and wear, but in good overall condition. Our donations to The Rainbow Centre have helped provide an education and a safe haven to hundreds of children who live in appalling conditions.…

  • Idioma: Inglés

    Editorial: Springer, 2011

    1461296854 / 9781461296850

    • Tapa blanda

    Librería: GreatBookPrices, Columbia, MD, Estados Unidos de AmericaGreatBookPrices

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Nuevo

    EUR 57,91

    Envío por EUR 2,37 
    Se envía dentro de Estados Unidos de America

    Cantidad disponible: 15 disponibles

    Condición: New.

  • Idioma: Inglés

    Editorial: Springer, 2011

    1461296854 / 9781461296850

    • Tapa blanda

    Librería: GreatBookPrices, Columbia, MD, Estados Unidos de AmericaGreatBookPrices

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Usado - Como Nuevo

    EUR 65,53

    Envío por EUR 2,37 
    Se envía dentro de Estados Unidos de America

    Cantidad disponible: 15 disponibles

    Condición: As New. Unread book in perfect condition.

    • Tapa blanda

    Librería: Clivia Mueller, Isernhagen, AlemaniaClivia Mueller

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Usado

    EUR 5,95

    Envío por EUR 27,00 
    Se envía de Alemania a Estados Unidos de America

    Cantidad disponible: 1 disponible

    Añadir al carrito

    of Erysiphe Graminis Hordei (S. A. Mycopath. et Mycolog. Applic. Fasc. 3 - 4, Vol. 35) 1968. S. 218 - 222. m. zahlr. Abb. br. -2) -Sonderabdruck-.

  • Idioma: Inglés

    Editorial: Springer, 2011

    1461296854 / 9781461296850

    • Tapa blanda

    Librería: California Books, Miami, FL, Estados Unidos de AmericaCalifornia Books

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Nuevo

    EUR 66,57

    Envío por EUR 2,69 
    Se envía dentro de Estados Unidos de America

    Cantidad disponible: Más de 20 disponibles

    Condición: New.

  • Idioma: Inglés

    Editorial: Plenum Press, 2011

    1461296854 / 9781461296850

    • Tapa blanda

    Librería: Revaluation Books, Exeter, Reino UnidoRevaluation Books

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Nuevo

    EUR 89,40

    Envío por EUR 17,98 
    Se envía de Reino Unido a Estados Unidos de America

    Cantidad disponible: 2 disponibles

    Paperback. Condición: Brand New. 650 pages. 10.00x7.00x1.48 inches. In Stock.

  • Idioma: Inglés

    Editorial: Springer, 2011

    1461296854 / 9781461296850

    • Tapa blanda

    Librería: AHA-BUCH GmbH, Einbeck, AlemaniaAHA-BUCH GmbH

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Nuevo

    EUR 66,40

    Envío por EUR 43,44 
    Se envía de Alemania a Estados Unidos de America

    Cantidad disponible: 1 disponible

    Taschenbuch. Condición: Neu. Druck auf Anfrage Neuware - Printed after ordering - Cell biology is moving at breakneck speed, and many of the results from studies on insects have helped in understanding some of the central problems of biology. The time is therefore ripe to provide the scientific community with a series of up-to-date, well illustrated reviews of selected aspects of the sub microscopic cytology of insects. The topics we have included fall into four general groups: seven chapters deal with gametogenesis, four concern develop ing somatic cells, seventeen chapters describe specialized tissues and organs, and three chapters cover cells in pathological states. These accounts are illustrated with over 600 electron micrographs. The more than 1100 pages in the two volumes of Insect Ultrastructure combined labors of 49 dedicated contributors from II countries. represent the These authors have digested and critically summarized a very large body of information, and some measure of this effort can be gained from consulting the bibliographies that close each of the 31 chapters. These contain 2400 publica tions authored by 1500 different scientists. However, before we congratulate ourselves on the advanced state of our knowledge, it is worth remembering that representatives of less than 0.01 % of the known species of insects have been examined with the electron microscope.…

  • Idioma: Inglés

    Editorial: Springer, 2013

    1461572681 / 9781461572688

    • Tapa blanda

    Librería: GreatBookPrices, Columbia, MD, Estados Unidos de AmericaGreatBookPrices

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Nuevo

    EUR 113,02

    Envío por EUR 2,37 
    Se envía dentro de Estados Unidos de America

    Cantidad disponible: 15 disponibles

    Condición: New.

  • Idioma: Inglés

    Editorial: Springer, 2013

    1461572681 / 9781461572688

    • Tapa blanda

    Librería: California Books, Miami, FL, Estados Unidos de AmericaCalifornia Books

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Nuevo

    EUR 122,04

    Envío por EUR 2,69 
    Se envía dentro de Estados Unidos de America

    Cantidad disponible: Más de 20 disponibles

    Condición: New.

  • Idioma: Inglés

    Editorial: Springer, 2013

    1461572681 / 9781461572688

    • Tapa blanda

    Librería: GreatBookPrices, Columbia, MD, Estados Unidos de AmericaGreatBookPrices

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Usado - Como Nuevo

    EUR 128,14

    Envío por EUR 2,37 
    Se envía dentro de Estados Unidos de America

    Cantidad disponible: 15 disponibles

    Condición: As New. Unread book in perfect condition.

  • Idioma: Inglés

    Editorial: Springer, 2013

    1461572681 / 9781461572688

    • Tapa blanda

    Librería: AHA-BUCH GmbH, Einbeck, AlemaniaAHA-BUCH GmbH

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Nuevo

    EUR 124,85

    Envío por EUR 35,00 
    Se envía de Alemania a Estados Unidos de America

    Cantidad disponible: 1 disponible

    Taschenbuch. Condición: Neu. Druck auf Anfrage Neuware - Printed after ordering - Fourteen years have passed since the publication of David Spencer Smith's Insect Cells: Their Structure and Function. Here the results of a decade of electronmicroscopic studies on insect cells were summarized in an organized and integrated fashion for the first time, and the ultrastructural characteristics of different specialized cells and tissues were abundantly illustrated in the 117 plates this monograph contained. In the intervening period great progress has been made in the field of Insect Ultrastructure. Organelles not even mentioned in Smith's book, such as synaptonemal complexes, clathrin baskets, fusomes, and retinular junc tions, have been identified and functions proposed for them. There have also been many technical advances that have profoundly influenced the direction of subsequent research. A spectacular example would be the development by Miller and Beatty of the chromosomal spreading technique which allowed for the first time ultrastructural studies on segments of chromosomes containing genes in various stages of replication and transcription. Then there is the freeze-fracture procedure first described by Moor and his colleagues. This technique permitted an analysis of intercellular junctions that was impossible with the conventional sectioning methods. The results greatly clarified our understanding of the channels for ion movement and the permeability barriers between cells and also the membrane changes that occur during the embryonic differentiation and metamorphosis of various types of insect cells.…

  • Idioma: Inglés

    Editorial: Springer, 2014

    1461572681 / 9781461572688

    • Tapa blanda

    Librería: Revaluation Books, Exeter, Reino UnidoRevaluation Books

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Nuevo

    EUR 162,74

    Envío por EUR 14,98 
    Se envía de Reino Unido a Estados Unidos de America

    Cantidad disponible: 2 disponibles

    Paperback. Condición: Brand New. reprint edition. 507 pages. 10.00x7.01x1.15 inches. In Stock.

  • Más imágenes

    Idioma: Inglés

    Editorial: Springer - Verlag, New York - Berlin, 1993

    0387568069 / 9780387568065

    • Tapa blanda
    • Primera edición

    Librería: Don's Book Store, Albuquerque, NM, Estados Unidos de AmericaDon's Book Store

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Usado - Bueno

    EUR 184,91

     Gastos de envío gratis 
    Se envía dentro de Estados Unidos de America

    Cantidad disponible: 1 disponible

    Trade Paperback. Condición: Very Good. Assumed First Edition. 223 Pages. Structural stability is of fundamental importance in materials science. Up-to-date information on the theoretical aspects of phase stability of materials is contained in this volume. Most of the first-principles calculations are based on the local-density approximation (LDA). In contrast, this volume contains very recent results of "going beyond LDA", such as the density gradient expansion and the quantum Monte-Carlo method. Following the recently introduced theoretical methods for the calculation of interatomic potentials, forces acting on atoms and total energies such as the Car-Parrinello, the effective-medium and the bond-order method, attempts have been made to develop even more sophisticated methods such as the order-N method in electronic-structure calculations. The present status of these methods and their application to real systems are described. In addition, in order to study the phase stability at finite temperatures, the microscopic calculations have to be combined with statistical treatment of the systems to describe, e.g. order-disorder transitions on the Si(001) surface or alloy phase diagrams. This book contains examples for this type of calculations.…

  • Idioma: Inglés

    Editorial: New York, New York, U.S.A.: Plenum Pub Corp, 1982

    0306409232 / 9780306409233

    • Tapa dura
    • Primera edición

    Librería: Bingo Books 2, Vancouver, WA, Estados Unidos de AmericaBingo Books 2

    Vendedor de 4 estrellas
    Contactar con el vendedor

    Condición: Usado - Bueno

    EUR 198,78

    Envío por EUR 5,65 
    Se envía dentro de Estados Unidos de America

    Cantidad disponible: 1 disponible

    Hardcover. Condición: Very Good. Estado de la sobrecubierta: Very Good. 1st Edition. hardback books and dust jackets in very good-plus condition,volume 2 has isbn 0306415453.

  • Idioma: Inglés

    Editorial: Intl Specialized Book Service Inc, 1983

    493081300X / 9784930813008

    • Tapa dura

    Librería: Mispah books, Redhill, SURRE, Reino UnidoMispah books

    Vendedor de 4 estrellas
    Contactar con el vendedor

    Condición: Usado - Aceptable

    EUR 370,35

    Envío por EUR 29,96 
    Se envía de Reino Unido a Estados Unidos de America

    Cantidad disponible: 1 disponible

    Hardcover. Condición: Good. Good. Dust Jacket NOT present. CD WILL BE MISSING. . SHIPS FROM MULTIPLE LOCATIONS. book.

  • Idioma: Inglés

    Editorial: Plenum Pub Corp, 1984

    0306415453 / 9780306415456

    • Tapa dura

    Librería: Phatpocket Limited, Waltham Abbey, HERTS, Reino UnidoPhatpocket Limited

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Usado - Aceptable

    EUR 1850,51

    Envío por EUR 12,75 
    Se envía de Reino Unido a Estados Unidos de America

    Cantidad disponible: 1 disponible

    Condición: Good. Your purchase helps support Sri Lankan Children's Charity 'The Rainbow Centre'. Ex-library, so some stamps and wear, but in good overall condition. Our donations to The Rainbow Centre have helped provide an education and a safe haven to hundreds of children who live in appalling conditions.…

  • Editorial: Center Academic Societies (1982), Bunkyo-ku, Toyko, Japan, 1982

    • Tapa dura

    Librería: Ray Boas, Bookseller - Established 1980, Walpole, NH, Estados Unidos de AmericaRay Boas, Bookseller - Established 1980

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Usado

    EUR 115,57

    Envío por EUR 5,02 
    Se envía dentro de Estados Unidos de America

    Cantidad disponible: 1 disponible

    Añadir al carrito

    HC. 195pp, ads ISBN 493081300X fine w/very good dustjacket (hardcover). B&W illustrations (ilustrador).

  • Idioma: Inglés

    Editorial: Springer, 2011

    1461296854 / 9781461296850

    • Tapa blanda
    • Impresión bajo demanda

    Librería: Brook Bookstore On Demand, Napoli, NA, ItaliaBrook Bookstore On Demand

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Nuevo

    EUR 46,22

    Envío por EUR 11,00 
    Se envía de Italia a Estados Unidos de America

    Cantidad disponible: Más de 20 disponibles

    Condición: new. Questo è un articolo print on demand.

  • Idioma: Inglés

    Editorial: Springer US, Humana Okt 2011, 2011

    1461296854 / 9781461296850

    • Tapa blanda
    • Impresión bajo demanda

    Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AlemaniaBuchWeltWeit Ludwig Meier e.K.

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Nuevo

    EUR 53,49

    Envío por EUR 23,00 
    Se envía de Alemania a Estados Unidos de America

    Cantidad disponible: 2 disponibles

    Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Cell biology is moving at breakneck speed, and many of the results from studies on insects have helped in understanding some of the central problems of biology. The time is therefore ripe to provide the scientific community with a series of up-to-date, well illustrated reviews of selected aspects of the sub microscopic cytology of insects. The topics we have included fall into four general groups: seven chapters deal with gametogenesis, four concern develop ing somatic cells, seventeen chapters describe specialized tissues and organs, and three chapters cover cells in pathological states. These accounts are illustrated with over 600 electron micrographs. The more than 1100 pages in the two volumes of Insect Ultrastructure combined labors of 49 dedicated contributors from II countries. represent the These authors have digested and critically summarized a very large body of information, and some measure of this effort can be gained from consulting the bibliographies that close each of the 31 chapters. These contain 2400 publica tions authored by 1500 different scientists. However, before we congratulate ourselves on the advanced state of our knowledge, it is worth remembering that representatives of less than 0.01 % of the known species of insects have been examined with the electron microscope. 652 pp. Englisch.…

  • Idioma: Inglés

    Editorial: Springer, 2013

    1461572681 / 9781461572688

    • Tapa blanda
    • Impresión bajo demanda

    Librería: Brook Bookstore On Demand, Napoli, NA, ItaliaBrook Bookstore On Demand

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Nuevo

    EUR 86,24

    Envío por EUR 8,00 
    Se envía de Italia a Estados Unidos de America

    Cantidad disponible: Más de 20 disponibles

    Condición: new. Questo è un articolo print on demand.

  • Idioma: Inglés

    Editorial: Springer-Verlag New York Inc., 2011

    1461296854 / 9781461296850

    • Tapa blanda
    • Impresión bajo demanda

    Librería: THE SAINT BOOKSTORE, Southport, Reino UnidoTHE SAINT BOOKSTORE

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Nuevo

    EUR 71,78

    Envío por EUR 27,53 
    Se envía de Reino Unido a Estados Unidos de America

    Cantidad disponible: Más de 20 disponibles

    Paperback / softback. Condición: New. This item is printed on demand. New copy - Usually dispatched within 5-9 working days.

  • Idioma: Inglés

    Editorial: Springer US, 2011

    1461296854 / 9781461296850

    • Tapa blanda
    • Impresión bajo demanda

    Librería: moluna, Greven, Alemaniamoluna

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Nuevo

    EUR 48,37

    Envío por EUR 48,99 
    Se envía de Alemania a Estados Unidos de America

    Cantidad disponible: Más de 20 disponibles

    Condición: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Cell biology is moving at breakneck speed, and many of the results from studies on insects have helped in understanding some of the central problems of biology. The time is therefore ripe to provide the scientific community with a series of up-to-date, well.…

  • Idioma: Inglés

    Editorial: Springer US Nov 2013, 2013

    1461572681 / 9781461572688

    • Tapa blanda
    • Impresión bajo demanda

    Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AlemaniaBuchWeltWeit Ludwig Meier e.K.

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Nuevo

    EUR 85,59

    Envío por EUR 23,00 
    Se envía de Alemania a Estados Unidos de America

    Cantidad disponible: 2 disponibles

    Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Fourteen years have passed since the publication of David Spencer Smith's Insect Cells: Their Structure and Function. Here the results of a decade of electronmicroscopic studies on insect cells were summarized in an organized and integrated fashion for the first time, and the ultrastructural characteristics of different specialized cells and tissues were abundantly illustrated in the 117 plates this monograph contained. In the intervening period great progress has been made in the field of Insect Ultrastructure. Organelles not even mentioned in Smith's book, such as synaptonemal complexes, clathrin baskets, fusomes, and retinular junc tions, have been identified and functions proposed for them. There have also been many technical advances that have profoundly influenced the direction of subsequent research. A spectacular example would be the development by Miller and Beatty of the chromosomal spreading technique which allowed for the first time ultrastructural studies on segments of chromosomes containing genes in various stages of replication and transcription. Then there is the freeze-fracture procedure first described by Moor and his colleagues. This technique permitted an analysis of intercellular junctions that was impossible with the conventional sectioning methods. The results greatly clarified our understanding of the channels for ion movement and the permeability barriers between cells and also the membrane changes that occur during the embryonic differentiation and metamorphosis of various types of insect cells. 508 pp. Englisch.…

  • Idioma: Inglés

    Editorial: Springer US, Springer Okt 2011, 2011

    1461296854 / 9781461296850

    • Tapa blanda
    • Impresión bajo demanda

    Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemaniabuchversandmimpf2000

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Nuevo

    EUR 53,49

    Envío por EUR 60,00 
    Se envía de Alemania a Estados Unidos de America

    Cantidad disponible: 1 disponible

    Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Cell biology is moving at breakneck speed, and many of the results from studies on insects have helped in understanding some of the central problems of biology. The time is therefore ripe to provide the scientific community with a series of up-to-date, well illustrated reviews of selected aspects of the sub microscopic cytology of insects. The topics we have included fall into four general groups: seven chapters deal with gametogenesis, four concern develop ing somatic cells, seventeen chapters describe specialized tissues and organs, and three chapters cover cells in pathological states. These accounts are illustrated with over 600 electron micrographs. The more than 1100 pages in the two volumes of Insect Ultrastructure combined labors of 49 dedicated contributors from II countries. represent the These authors have digested and critically summarized a very large body of information, and some measure of this effort can be gained from consulting the bibliographies that close each of the 31 chapters. These contain 2400 publica tions authored by 1500 different scientists. However, before we congratulate ourselves on the advanced state of our knowledge, it is worth remembering that representatives of less than 0.01 % of the known species of insects have been examined with the electron microscope.Springer-Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 652 pp. Englisch.…

  • Idioma: Inglés

    Editorial: Springer US, 2013

    1461572681 / 9781461572688

    • Tapa blanda
    • Impresión bajo demanda

    Librería: moluna, Greven, Alemaniamoluna

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Nuevo

    EUR 92,27

    Envío por EUR 48,99 
    Se envía de Alemania a Estados Unidos de America

    Cantidad disponible: Más de 20 disponibles

    Condición: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Fourteen years have passed since the publication of David Spencer Smith s Insect Cells: Their Structure and Function. Here the results of a decade of electronmicroscopic studies on insect cells were summarized in an organized and integrated fashion for the .…

  • Idioma: Inglés

    Editorial: Springer, Chapman And Hall/CRC Nov 2013, 2013

    1461572681 / 9781461572688

    • Tapa blanda
    • Impresión bajo demanda

    Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemaniabuchversandmimpf2000

    Vendedor de 5 estrellas
    Contactar con el vendedor

    Condición: Nuevo

    EUR 106,99

    Envío por EUR 60,00 
    Se envía de Alemania a Estados Unidos de America

    Cantidad disponible: 1 disponible

    Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Fourteen years have passed since the publication of David Spencer Smith's Insect Cells: Their Structure and Function. Here the results of a decade of electronmicroscopic studies on insect cells were summarized in an organized and integrated fashion for the first time, and the ultrastructural characteristics of different specialized cells and tissues were abundantly illustrated in the 117 plates this monograph contained. In the intervening period great progress has been made in the field of Insect Ultrastructure. Organelles not even mentioned in Smith's book, such as synaptonemal complexes, clathrin baskets, fusomes, and retinular junc tions, have been identified and functions proposed for them. There have also been many technical advances that have profoundly influenced the direction of subsequent research. A spectacular example would be the development by Miller and Beatty of the chromosomal spreading technique which allowed for the first time ultrastructural studies on segments of chromosomes containing genes in various stages of replication and transcription. Then there is the freeze-fracture procedure first described by Moor and his colleagues. This technique permitted an analysis of intercellular junctions that was impossible with the conventional sectioning methods. The results greatly clarified our understanding of the channels for ion movement and the permeability barriers between cells and also the membrane changes that occur during the embryonic differentiation and metamorphosis of various types of insect cells.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 508 pp. Englisch.…