Table 2.

Effects of intrauterine heat-killed E. coli inoculation on fetal retention and survival. Evaluations were performed at necropsy immediately after preterm delivery, or 48 hours after intrauterine injection in animals who had not delivered. P values were calculated by Kruskall-Wallis test.

Maternal MyD88 genotype	Fetal MyD88 genotype	N	Median % of fetuses retained in utero per litter	P value	Median % of fetuses alive in utero per litter	P value
WT	WT	8	65		0
WT	Het	7	29	0.6	0	0.2
WT	KO	8	24		0
KO	KO	7	100		100
KO	Het	7	100	0.3	86	.01
KO	WT	8	100		81
		P value	<0.0001		<0.0001