CXCL2 and polycystic ovary syndrome: To verify the differentially expressed RNAs in the ovaries of PCOS, qRT-PCR was performed for the quantification of the expression of LOC105379507, CXCL8, AREG, LOC107986562, CXCL2, DLGAP5, Lin001778, LOC105379355, PADI6 and SNORA9.