Co-immunoprecipitation of native FIZ1 and CRX from bovine retina. Immunoblots of Co-IP assays. A) Bovine retinal nuclear extract (300 μg protein) was incubated with anti-CRX antibody or pre-immune serum, and the immunoprecipitated proteins were analyzed with anti-bFIZ1 antibody. A mock sample (no extract) was included. B) The reverse Co-IP, using the anti-bFIZ1 antibody for precipitation and the anti-CRX antibody for detection.