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PM-sEVs circ-XPO4 regulates the miR-221-5p/pIgR pathway in IPEC-J2 cells. (A–C) qRT-PCR analysis of circ-XPO4, miR-221-5p, and pIgR expression levels in IPEC-J2 cell treated with OE.NC or OE.circ-XPO4 (n = 6). (D,E) Western Blotting analysis of pIgR protein levels in IPEC-J2 cell treated with OE.NC or OE.circ-XPO4 (n = 4). * p < 0.05; ** p < 0.01.
