Table 1.

Survival beyond 24 h of birth in transgenic and non transgenic Dhcr7-/pups

	Genotype*	n	Survival**		Survival rate (%)
			<24 h	>24 h
TgDHCR7 line 2	WT	29	0	29	100
	Dhcr7+/-	57	0	57	100
	Dhcr7-/-Tg-	5	5	0	0
	Dhcr7-/-Tg+	28	16	12	42.8
TgDHCR7 line 3	WT	19	0	19	100
	Dhcr7+/-	40	0	40	100
	Dhcr7-/-Tg-	4	4	0	0
	Dhcr7-/-Tg+	14	6	8	57.1

* Tg positive and negative pups are included in WT and Dhcr7+/- groups. **Survival is defined as being alive beyond 24 hours after being born.