Human T-cell leukemia virus type I ( HTLV-I ) is the etiologic agent of the adult T-cell leukemia , an aggressive and often fatal malignancy of activated human CD4 T cells .
human t-cell leukemia virus type i ( htlv-i ) is the etiologic agent of the adult t-cell leukemia , an aggressive and often fatal malignancy of activated human cd4 t cells .
B-virus I-virus I-virus I-virus I-virus I-virus O B-virus O O O O O O O B-other_name I-other_name I-other_name O O O O O O O O B-cell_line I-cell_line I-cell_line I-cell_line I-cell_line O