Table 1. The frequency of abnormal fertility after HongrES1 knockdown by RNAi in vivo.

	Frequency of dead offspring	Frequency of small size offspring	Frequency of abnormal embryos
Csi	0/11	0/11	0/12
Hsi1	5/13 (1∼2)	1/13 (1)	4/11 (1∼2)
Hsi2	3/12 (1∼3)	1/12 (1)	3/12 (1∼4)

Denominator: the total number of female rats producing offspring or fetuses, numerator: the number of female rats producing abnormal offspring or fetuses, parentheses: the number of abnormal offspring or fetuses in each litter or each uterus corresponding to numerator.