A simple enzymatic method for parietal yolk sac removal in early postimplantation mouse embryos
Article first published online: 1 DEC 2006
Copyright © 2006 Wiley-Liss, Inc.
Volume 236, Issue 2, pages 489–493, February 2007
How to Cite
Rivera-Pérez, J. A., Diefes, H. and Magnuson, T. (2007), A simple enzymatic method for parietal yolk sac removal in early postimplantation mouse embryos. Dev. Dyn., 236: 489–493. doi: 10.1002/dvdy.21034
- Issue published online: 10 JAN 2007
- Article first published online: 1 DEC 2006
- Manuscript Accepted: 20 OCT 2006
- National Institutes of Health
- parietal yolk sac;
- Reichert's membrane;
- collagenase type IV;
Crucial aspects of axial development in mice occur at early postimplantation stages from the time of implantation to the appearance of the primitive streak. However, this period of development is notoriously refractory to experimental approaches due to the small size of the conceptus and to the presence of the parietal yolk sac, a protective tripartite membrane that surrounds the developing egg cylinder. Here, we describe a method that combines enzymatic digestion and mechanical manipulation to remove the parietal yolk sac of conceptuses at stages between 5.5 and 6.5 days post coitum. This method, which is compatible with whole-mount in situ hybridization and immunostaining techniques, offers a significant improvement over conventional dissection techniques, and it will greatly facilitate research in early mammalian development. Developmental Dynamics 236:489–493, 2007. © 2006 Wiley-Liss, Inc.