Immunogen sequence: RDKVMSEFNN NFRQQMENYP KNNHTASILD RMQADFKCCG AANYTDWEKI PSMSKNRVPD SCCINVTVGC GINFNEKAIH KEGCVEKIG. CD63, also known as LAMP-3, is a glycoprotein belonging to the tetraspanin family, primarily located in late endosomes, lysosomes, and