tokens: A subpopulation of stably infected CD4+ cells capable of producing virus upon stimulation has been identified in human immunodeficiency virus ( HIV ) -positive individuals ( T . -W . Chun , D . Finzi , J . Margolick , K . Chadwick , D . Schwartz , and R . F . Siliciano , Nat . Med . 1 : 1284-1290 , 1995 ) .
folded_tokens: a subpopulation of stably infected cd4+ cells capable of producing virus upon stimulation has been identified in human immunodeficiency virus ( hiv ) -positive individuals ( t . -w . chun , d . finzi , j . margolick , k . chadwick , d . schwartz , and r . f . siliciano , nat . med . 1 : 1284-1290 , 1995 ) .
labels: O O O B-cell_type I-cell_type I-cell_type I-cell_type O O O O O O O O O O B-virus I-virus I-virus O B-virus O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O