Table 2.

Correlation of genotype with morphology of cultured embryos

Genotype	Time of harvest, days	Condition of embryo	No. of embryos (% total)
+/+	8.5	Healthy	9 (26)
+/−	8.5	Healthy	19 (54)
−/−	6.5	Degenerating	5 (15)
No PCR result	6.5	Degenerating	2 (5)
Total no. of embryos			35 (100)

Embryos were flushed from the uterus at day 3.5. Healthy embryos were harvested at day 8.5 (i.e., 5 days in culture), while degenerating embryos were harvested at day 6.5 (i.e., 3.5 days in culture) for nested PCR analysis.