Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 7-Day Trial for You or Your Team.

Learn More →

Preface

Preface JOURNAL OF ELECTRON MICROSCOPY TECHNIQUE 16:91 (1990) With this issue the Journal of Electron Microscopy The article by Bement and Capco continues in this Technique begins a series of articles entitled “The U1- vein by addressing the sequence of events in meiotic trastructure of Development.” The series is intended to maturation of amphibia, specifically Xenopus laeuis. provide in depth treatment of major advances in devel- This review gives detailed treatment of the intracellu- opmental biology in which electron microscopy has lar messengers (including calcium and protein phos- made important contributions. This series is timely be- phorylation) which regulate maturation. cause much current understanding of basic cell biology The fifth review, by McGaughey, Racowsky, Rider, is founded in one corner on biochemistry and in the Baldwin, DeMarais, and Webster, provides a parallel other corner on ultrastructure. Developmental biology treatment of meiotic maturation in mammalian oo- cytes. Emphasis, however, is on oocyte structural involves yet one higher degree of structural knowledge: changes including germinal vesicle breakdown, gap how cells interrelate with one another during cell junctions, and morphology of the cortical cytoskeleton. movement, tissue differentiation, and organogenesis. Bearer and Friend describe the microdomains pres- Much is known about these processes at the light mi- ent in mammalian sperm membranes during matura- croscopy and even scanning electron microscopy level. tion and capacitation. These domains are of substantial However, developmental events at the ultrastructural cell biological interest; guinea pig sperm represent an level either have received very recent treatment or re- important model system for studying development and main subjects of current study. In addition, increased maintenance of membrane lipid and protein heteroge- use of genetic and molecular biological methods foster neity. new ultrastructural objectives for corroboration. Finally, in the last two articles, Van Blerkom dis- Each part of the series will be devoted to one stage of cusses the importance of ultrastructural heterogeneity development. Within a given issue articles will address in bovine and human oocytes in regard to their viabil- topics of importance in a number of taxonomic groups ity, fertilizability, and developmental potential. These so that the reader can make comparisons. For example, reports concern cell biological issues that should be of the first three issues on Gametogenesis include echi- importance to those working in in vitro fertilization noderms, amphibia, mammals, and humans. laboratories in agriculture and medicine. The first article, by Smiley, looks at oogenesis in Our first three issues on Gametogenesis look ahead echinoderms using the sea cucumber as a major exam- to the next part of the series: Events at Fertilization. ple. Since these animals use external fertilization, oo- The topics on sperm and egg structure and the cell genesis here is aimed at rapid growth of large numbers biology of gametes presented in this issue and the next of oocytes. will lead naturally to articles in the following issue on The second, by Koch and Lambert, presents a com- sperm-egg interaction, pronuclear movements, intra- prehensive survey of sperm ultrastructure in inverte- cellular messengers, and in vitro fertilization in mam- brates and lower vertebrates, all of which exhibit ex- mals and humans. ternal fertilization. This article provides a valuable source, especially for those interested in comparative developmental biology. The third article, by Wallace and Selman, treats the fundamental events of oogenesis in amphibia and fish. DOUGLAS E. CHANDLER Salient features of follicle structure, vitellogenesis, Arizona State University and the cell biological aspects of oocyte growth are ad- Tempe, Arizona dressed. 0 1990 WILEY-LISS, INC http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Microscopy Research and Technique Wiley

Preface

Download PDF
1 page

Loading next page...
 
/lp/wiley/preface-dO47N1e20b

References (0)

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
Wiley
Copyright
Copyright © 1990 Wiley Subscription Services, Inc., A Wiley Company
ISSN
1059-910X
eISSN
1097-0029
DOI
10.1002/jemt.1060160202
Publisher site
See Article on Publisher Site

Abstract

JOURNAL OF ELECTRON MICROSCOPY TECHNIQUE 16:91 (1990) With this issue the Journal of Electron Microscopy The article by Bement and Capco continues in this Technique begins a series of articles entitled “The U1- vein by addressing the sequence of events in meiotic trastructure of Development.” The series is intended to maturation of amphibia, specifically Xenopus laeuis. provide in depth treatment of major advances in devel- This review gives detailed treatment of the intracellu- opmental biology in which electron microscopy has lar messengers (including calcium and protein phos- made important contributions. This series is timely be- phorylation) which regulate maturation. cause much current understanding of basic cell biology The fifth review, by McGaughey, Racowsky, Rider, is founded in one corner on biochemistry and in the Baldwin, DeMarais, and Webster, provides a parallel other corner on ultrastructure. Developmental biology treatment of meiotic maturation in mammalian oo- cytes. Emphasis, however, is on oocyte structural involves yet one higher degree of structural knowledge: changes including germinal vesicle breakdown, gap how cells interrelate with one another during cell junctions, and morphology of the cortical cytoskeleton. movement, tissue differentiation, and organogenesis. Bearer and Friend describe the microdomains pres- Much is known about these processes at the light mi- ent in mammalian sperm membranes during matura- croscopy and even scanning electron microscopy level. tion and capacitation. These domains are of substantial However, developmental events at the ultrastructural cell biological interest; guinea pig sperm represent an level either have received very recent treatment or re- important model system for studying development and main subjects of current study. In addition, increased maintenance of membrane lipid and protein heteroge- use of genetic and molecular biological methods foster neity. new ultrastructural objectives for corroboration. Finally, in the last two articles, Van Blerkom dis- Each part of the series will be devoted to one stage of cusses the importance of ultrastructural heterogeneity development. Within a given issue articles will address in bovine and human oocytes in regard to their viabil- topics of importance in a number of taxonomic groups ity, fertilizability, and developmental potential. These so that the reader can make comparisons. For example, reports concern cell biological issues that should be of the first three issues on Gametogenesis include echi- importance to those working in in vitro fertilization noderms, amphibia, mammals, and humans. laboratories in agriculture and medicine. The first article, by Smiley, looks at oogenesis in Our first three issues on Gametogenesis look ahead echinoderms using the sea cucumber as a major exam- to the next part of the series: Events at Fertilization. ple. Since these animals use external fertilization, oo- The topics on sperm and egg structure and the cell genesis here is aimed at rapid growth of large numbers biology of gametes presented in this issue and the next of oocytes. will lead naturally to articles in the following issue on The second, by Koch and Lambert, presents a com- sperm-egg interaction, pronuclear movements, intra- prehensive survey of sperm ultrastructure in inverte- cellular messengers, and in vitro fertilization in mam- brates and lower vertebrates, all of which exhibit ex- mals and humans. ternal fertilization. This article provides a valuable source, especially for those interested in comparative developmental biology. The third article, by Wallace and Selman, treats the fundamental events of oogenesis in amphibia and fish. DOUGLAS E. CHANDLER Salient features of follicle structure, vitellogenesis, Arizona State University and the cell biological aspects of oocyte growth are ad- Tempe, Arizona dressed. 0 1990 WILEY-LISS, INC

Journal

Microscopy Research and Technique – Wiley

Published: Oct 1, 1990

There are no references for this article.