Table 2. Postmortem findings after gross examination of the uterus of Swiss Webster and B6D2F1 females.

	#female	Condition	Pregnancy	No. of live pups *	Endometrium findings
SW	1	ET	Pregnant	0	Normal
	2	ET	Pregnant	0	Abnormal IS; cysts
	3	No mating	Non-pregnant	-	Normal
	4	No mating	Non-pregnant	-	Hemorrhagic
	5	Mating	Pregnant	9	Normal
	6	Mating	Pregnant	8	Abnormal IS; cysts, hemorrhagic
B6D2F1	1	ET	Pregnant	8	Normal
	2	ET	Pregnant	8	Normal
	3	No mating	Non-pregnant	-	Normal

^*Absence of pups after delivery in pregnant mice was assumed as cannibalism. ET: embryo transfer; IS: implantation sites.