Table 1. Up-regulation of pro-meiotic markers in Kit-positive spermatogonia from 7dpp testes, cultured under SM with respect to cells kept at unit gravity.

Gene name	mRNA fold induction (RT-PCR)	Protein fold induction (Western blot)
Spo11	1.8±0.3	N.D.
Kit	1.0±0.1	1.8±0.3
Scp1	1.9±0.2	N.D.
Scp3	1.4±0.1	1.9±0.2
Stra8	N.D.	2.2±0.2