Human T cell lymphotropic virus I ( HTLV-I ) is the etiological agent for adult T cell leukemia and tropical spastic paraparesis ( also termed HTLV-I -associated myelopathy ) .
human t cell lymphotropic virus i ( htlv-i ) is the etiological agent for adult t cell leukemia and tropical spastic paraparesis ( also termed htlv-i -associated myelopathy ) .
B-virus I-virus I-virus I-virus I-virus I-virus O B-virus O O O B-other_name I-other_name O B-other_name I-other_name I-other_name I-other_name O B-other_name I-other_name I-other_name O O O B-virus O O O O