9780138574345

The eighth edition of this widely respected volume continues the tradition of introducing laboratory studies of developmental biology with its broad coverage, copious illustrations and detailed descriptions of a wide range of developing stages. Unique in its combination of a detailed atlas with interesting exercises on living embryos, it also contains complete instructions for additional experimental studies that include state-of-the-art research approaches. The eighth edition adds a new chapter on the development of the mouse embryo, many new illustrations, seven new advanced hands-on studies and a glossary.

Dr. Gary C. Schoenwolf is a professor in the Department of Neurobiology and Anatomy at the University of Utah School of Medicine

Preface

iv

Sea Urchin Embryos

1

(22)

Frog Embryos

23

(28)

Chick Embryos

51

(120)

Mouse Embryos

171

(44)

Pig Embryos

215

(64)

Hands-On Studies

279

(41)

References

320

(2)

History

322

(4)

Credits

326

(2)

Glossary

328

(26)

Index

354

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Preface Five major changes have been made in the eighth edition. First, a new chapter (Chapter 4) has been added on the development of the mouse embryo. With the advent of modern techniques in molecular genetics, the mouse embryo has become an important model system for analyzing development. Virtually any desired gene can now be mutated in the mouse embryo, and the effects of its over expression or under expression can be readily studied. Additionally, recent advances in whole-embryo Culture and techniques of experimental embryology have further increased the importance of the mouse embryo to developmental biologists. With this new chapter, we have added 69 photographs (Photos 4.14.69), 2 line drawings (Figs. 4.1 and 4.2), and 2 experimental exercises (Exercises 4.1 and 4.2). Second, all images have been digitally processed. This was done to improve quality, clarity, ascetics, and ease of viewing. All illustrations have been relabeled and layout has been improved, with illustrations from each chapter grouped together within the relevant chapter rather than at the back of the book in a separate atlas. This should help the student find and learn the material quicker. Aside from the new illustrations added in Chapter 4, 28 additional illustrations (mostly scanning electron micrographs) have been included in Chapters 2 and 3, increasing the visual impact and depth of the manual. A new numbering scheme has been used for all illustrations. Both photographs and line drawings are now numbered according to chapter number (1-6) followed by a decimal point and the number of the illustration in sequence. Photographs are referred to as "Photos" and line drawings as "Figs." Third, the layout of the text was also done digitally. In doing this, the text was reordered into 6 chapters, placed into two-column format, and updated, and the flow from topic to topic has been simplified. Fourth, all exercises are now grouped together in Chapter 6, along with additional hands-on studies. Seven new advanced hands-on studies have been added, covering the cutting of frozen sections, in situ hybridization (plus 12 new illustrations), chick New whole-embryo culture, dye injections for tracking cell movements, BrdU labeling to study cell proliferation, TUNEL labeling to study cell death (apoptosis), and mouse whole-embryo culture. With the addition of 2 exercises on early mouse embryos, Chapter 6 now contains 22 exercises. These exercises allow students to gain some hands-on experience with, and deeper appreciation for, living embryos and the dynamic events underlying embryogenesis. Instructors may choose to have students do all the exercises or only selected ones. Additionally, instructors may choose to do all or some of the exercises as demonstrations with various degrees of student participation. Furthermore, students may consider doing selected exercises as independent study projects. It is difficult to schedule experiments in a typical quarter or semester course format when embryos develop over hours or days, and not all experiments work every time. However, the pedagogic value of working with living embryos far outweighs the scheduling difficulties. Also, although sometimes experiments will fail, a failed experiment can often be more instructive than a successful one, leading to subsequent inquiry into what went wrong. Fifth, a glossary has been added. This will help students find definitions quickly, facilitating their learning of important terms and concepts. This edition has been written to allow students to start their laboratory studies with any of the organisms included, depending on the instructor's preference. However, we do recommend that students study the chick embryo prior to studying the mouse embryo; this will facilitate their understanding of the "inverted" U-shaped mouse blastoderm as compared to the flat chick blastoderm. Orientation illustrations ("orientators") are placed with ph

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Laboratory Studies of Vertebrate and Invertebrate Embryos : Guide and Atlas of Descriptive and Experimental Development

Laboratory Studies of Vertebrate and Invertebrate Embryos : Guide and Atlas of Descriptive and Experimental Development

0138574340

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