tokens: RT-PCR and in situ hybridization analyses of a time course of juvenile testis development indicate that Spo11 expression begins in early meiotic Prophase I , prior to the pachytene stage , with increasing accumulation of mRNA through the pachytene stage .
folded_tokens: rt-pcr and in situ hybridization analysis of a time course of juvenile testis development indicate that spo11 expression begin in early meiotic Prophase I , prior to the pachytene stage , with increase accumulation of mrna through the pachytene stage .