Table 1. Male fertility of Slc22a14-deficent mice.

Genotype	No. of females mated	No. of litters	Mean litter size	No. of births
Slc22a14+/+	8	8	8.5	68
Slc22a14−/−	10	1	1	1

Male mice of the indicated genotype were mated with wild-type BDF1 female mice for 2 weeks, and number of litters, number of births and mean litter size were counted. In each experiment, one male mouse was mated with two female mice (n = 4 wild-type; n = 5 homozygous mutants).