were increased in PND
10.5 testes. Stra8 is a known ลprotein required for meiotic
initiation [13,14,31], and in our proteomic profile, this protein
was up regulated in PND 10.5 testes. Because Stra8 is known to
be regulated by RA, its identification in our study showed the
ability of proteomic technology to identify RA signaling
proteins during meiosis initiation in male mice.