Immunogen sequence: SIAAFSPSPG FSPYNVSKTA LLGLTKTLAI ELAPRNIRVN CLAPGLIKTS FSRMLWMDKE KEESMKETLR IRRLGEPEDC AGIVSFLCSE DASYITGETV VVGGGT Highest antigen sequence identity to the following orthologs: Mouse - 75%, Rat - 75%. Reduces all-trans-retinal and 9