Assertion: stem cell's level | /r/HasProperty | figure s3 a
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text: Here we exposed PGCLCs resembling E12.5 PGCs to conditions supporting their entry into meiosis by identification of morphogens that induced upregulation of meiosis pathways and by providing a culture environment with postnatal somatic testicular cells expressing low CYP26B1 levels ( Figure S3 A).