tokens: Human immunodeficiency virus type 1 ( HIV-1 ) can establish a persistent and latent infection in CD4+ T lymphocytes ( W . C . Greene , N . Engl . J . Med . 324 : 308-317 , 1991 ; S . M . Schnittman , M . C . Psallidopoulos , H . C . Lane , L . Thompson , M . Baseler , F . Massari , C . H . Fox , N . P . Salzman , and A . S . Fauci , Science 245 : 305-308 , 1989 ) .
folded_tokens: human immunodeficiency virus type 1 ( hiv-1 ) can establish a persistent and latent infection in cd4+ t lymphocytes ( w . c . greene , n . engl . j . med . 324 : 308-317 , 1991 ; s . m . schnittman , m . c . psallidopoulos , h . c . lane , l . thompson , m . baseler , f . massari , c . h . fox , n . p . salzman , and a . s . fauci , science 245 : 305-308 , 1989 ) .
labels: B-virus I-virus I-virus I-virus I-virus O B-virus O O O O O O O O O B-cell_type I-cell_type I-cell_type 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 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