| differences in viral and host genetic risk factors for development of human t-cell lymphotropic virus type 1 (htlv-1)-associated myelopathy/tropical spastic paraparesis between iranian and japanese htlv-1-infected individuals. | human t-cell lymphotropic virus type 1 (htlv-1)-associated myelopathy/tropical spastic paraparesis (ham/tsp) is a neurological disease observed only in 1-2 % of infected individuals. htlv-1 provirus load, certain hla alleles and htlv-1 tax subgroups are reported to be associated with different levels of risk for ham/tsp in kagoshima, japan. here, it was determined whether these risk factors were also valid for htlv-1-infected individuals in mashhad in northeastern iran, another region of endemic ... | 2005 | 15722539 |