tokens: Human immunodeficiency virus type 1 ( HIV-1 ) replication is controlled by a complex array of virally encoded and cellular proteins .
folded_tokens: human immunodeficiency virus type 1 ( hiv-1 ) replication is controlled by a complex array of virally encoded and cellular proteins .
labels: B-virus I-virus I-virus I-virus I-virus O B-virus O O O O O O O O O O O O O O O