Table 2.

Wild-type blastocysts fail to implant in Fkbp52^−/− recipients

Genotype		No. of blastocysts transferred					No. of blastocysts recovered
Blastocysts	Recipients		No. of recipients	No. of mice with IS (%)	No. of IS (%)	No. of IS
+/+	+/+/+/−	178	10	8 (80)	74 (41)	7.3 ± 4.0	2*
+/+	−/−	79	4	0 (0)	0	0	14†

Day 4 wild-type (+/+) blastocysts were transferred into uteri of +/+, +/−, or −/− recipients on day 4 of pseudopregnancy. The recipients were examined for implantation sites (IS) on day 5 by the blue dye method. Uteri without IS were flushed with saline to recover any unimplanted blastocysts.

^*Two mice without IS yielded one blastocyst each.

^†Fourteen blastocysts were recovered from three recipients. The results of +/+ and +/− mice were not significantly different and are presented as a pool (mean ± SD).