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Special Online Collection: Germ Cells

Jump to features in special collection:

Germ CellsIn the 20 April 2007 issue, Science and it online companion Signal Transduction Knowledge Environment (STKE) team up to explore some of the exciting ongoing research on germ cells -- the reproductive cells of an organism. In Science, a collection of Review articles highlights the numerous transitions and decisions involved in the establishment and maintenance of germ cell fate during development, while News stories look at the evolutionary origins of eggs and sperm and developments in oocyte freezing. In STKE, Perspective articles discuss how poppies reject self-pollen, and the similarities in fly and mouse mechanisms involved in guiding primordial germ cell migration.

In Science

INTRODUCTION

The Transitioning Germ Line >
B. A. Purnell and J. Travis

NEWS

Melting Opposition to Frozen Eggs >
M. Leslie
A Close Look at Urbisexuality >
J. Travis

REVIEWS

Germ Versus Soma Decisions: Lessons from Flies and Worms >
S. Strome and R. Lehmann
Germ Cell Specification in Mice >
K. Hayashi et al.
piRNAs in the Germ Line >
H. Lin
Epigenetic Decisions in Mammalian Germ Cells >
C. B. Schaefer et al.
The Mysteries of Sexual Identity: The Germ Cell’s Perspective >
J. Kimble and D. C. Page

REVIEWS

Male and Female Drosophila Germline Stem Cells: Two Versions of Immortality >
M. T. Fuller and A. C. Spradling
Male Germline Stem Cells: From Mice to Men >
R. L. Brinster
The Maternal-Zygotic Transition: Death and Birth of RNAs >
A. F. Schier
Regulation of the Oocyte-to-Zygote Transition >
M. L. Stitzel and G. Seydoux
Gametes from Embryonic Stem Cells: A Cup Half Empty or Half Full? >
G. Q. Daley

Also in this issue:

Editorial: Free-Range Eggs?
A. McLaren

In Science's Signal Transduction Knowledge Environment

EDITORIAL GUIDE

Focus Issue: From Egg to Egg--Cell Signaling in Germ Cells >
E. M. Adler and N. R. Gough
Signals from the surrounding tissues control survival and migration of germ cells.

PERSPECTIVE

What Is Left Behind--Quality Control in Germ Cell Migration >
B. Boldajipour and E. Raz
Drosophila and mouse use different molecules but similar mechanisms to guide migration of primordial germ cells and eliminate those that fail to migrate.

PERSPECTIVE

Pollen-Pistil Signaling in Self-Incompatible Poppy--Does It Allow More Efficient Resource Allocation in the Pistil? >
B. McClure
Destruction of incompatible pollen tubes may leave more resources available for supporting the growth of compatible ones.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)