Figure 2

Blastocyst attachment and implantation.

(A) Outcome of embryo transfer between wildtype (WT) and PUGKO mice. Embryo implantation sites (IS) were visualized by tail vein dye injection on gestational day 6 after transfer on day 3. No difference in number or size of embryo implantation sites were observed between WT mice receiving WT or PUGKO embryos. Scale bar = 1 cm. (B) Blastocysts recovered in uterine flush of wildtype (WT) and PUGKO mice on gestational days 4 and 5 at 1600 h. The asterisk (*) denotes differences (P < 0.05) between WT and PUGKO mice.