Figure 4. Verification of the expression of CircBBS9. (A) qRT-PCR verification of the expression of circBBS9 among groups. (B) Schematic diagram of primer design of circBBS9. (C) Identification of circBBS9 in Qu muscle by PCR amplification. (D) Sanger sequencing to verify the amplified products of circBBS9. Data are presented as mean ± SEM and *P<0.05, **P<0.01.