FGF9 and epilepsy: A series of CKO mice (CKOVGAT mice, CKONestin mice, CKOVGLUT1 mice, CKOGFAP mice, CKOOlig2 mice, CKODAT mice, CKOMpz mice, and CKOChat mice) were generated to determine what type of cells knockout FGF9 is associated with the epilepsy in CKOOlig1 mice.