Immunogen sequence: QQKQQQQPPG GQAKARPAKR KAGTSPRPST DVCPDPLGIS DSYSPPLPGP SGSPTTAVAT VSIWSPASES PLPEAQRAGL VASGPSLTSA PYAMTYAPAS A. The cone-rod homeobox-containing gene (CRX) encodes a transcription factor that coordinates the expression of several pho