Table 2. Number of viable newborns resulting from crossing LoxPshBCCIP with EIIaCre with or without p53 deletion.

	LoxPshBCCIP(−/−)
	P53 +/+	p53+/−	p53−/−	Total
EIIaCre −/−	6	31	9	46
EIIaCre +/−	8	32	11	51
Total	14	63	20	97

The founder line LoxPshBCCIP^+/+-4 was used for this breeding. See text and Table S2 for details.