Preparation of Postimplantation Mouse Embryos for Imaging: Figure 1.

INTRODUCTION Genetic manipulation methods allow fluorescent labeling of virtually any cell type or protein of interest in developing embryos, providing powerful insights into morphogenetic events at cellular and subcellular resolutions. The development of ex vivo embryo culture methods combined with high-resolution imaging provides a strong platform for observing morphogenetic events as they occur within the developing embryo. This protocol details the dissection and immobilization of postimplantation mouse embryos in preparation for live imaging.