Figure 5From: Proximal visceral endoderm and extraembryonic ectoderm regulate the formation of primordial germ cell precursorsAt E6.5, PGC precursors can still change fate when placed heterotopically. (A) Schematic of the experimental design. E6.5 Blimp1:gfp ROSA26:LacZ (ROSA) embryos were recovered and the proximal-posterior part containing Blimp1(GFP)-positive PGC precursors isolated and transplanted either distally of proximal-posteriorly into a E6.5 wild type (WT) embryo. The recombinates were cultured for 3 days and stained for LacZ and alkaline phosphatase-activity. (B, C) Sagittal section showing a recombinate explant in which the PGC precursor cluster were placed distally (B) and proximal-posteriorly (C). The inserts are a magnification of the region containing PGCs depicted in box. For orientation, a cartoon of the whole explant is included showing in the dashed box the region of the explant imaged. Scale bar is 200 μm.Back to article page