title: GSM6045508: small RNAs in P11 leptotene and zygote spermatocytes; Mus musculus; ncRNA-Seq
library_construction_protocol: Leptotene and zygote spematocytes were  purified by cell sorting using Hochyst staining.  RNAs were extracted by isogene, and used for small RNA library preparation NEBNext small RNA library prep set was used.