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Validation results of three selected circular RNAs in polytocous sheep in the follicular phase (PF) and polytocous sheep in the luteal phase (PL) (A–C); Validation results of three circular RNAs in monotocous sheep in the follicular phase (MF) and monotocous sheep in the luteal phase (ML) (D–F) by real-time quantitative polymerase chain reaction (RT-qPCR).
