Table 1.

Fertility Tests For Gpr56^+/− and Gpr56^−/− Male Mice

	Fertile/Total
	Gpr56+/−	Gpr56−/−
7–14 weeks *	8/8 (100%)	4/10 (40%)
16 weeks	5/5 (100%)	2/8 (17%)
Total	13/13 (100%)	6/18 (33%)

Note: Gpr56^+/− and Gpr56^−/− male mice were bred with Gpr56^+/− females for 2.5 months (for 7 to14 week-old mice) or 1.6 months (for 16 week-old mice). The males that produced offspring were considered fertile.

^*the Gpr56^+/− mice included two of 7 weeks, two of 12 weeks, two of 13 weeks, and two of 14 weeks; the Gpr56^−/− mice included four of 13 weeks and six of 14 weeks.