OCM and ocular melanoma: OCM1 cells; CRMM1 cells; 92.1 cells; MUM2B cells; MEL290 cells; OMM1 cells; CRMM1 cells; CRMM2 cells; CM2005.1 cells; male BALB/c nude mice (4 weeks old); human ocular melanoma tissues; human normal melanocyte tissues