tokens: Bacterial vaginosis ( BV ) is associated with an increased rate of sexual transmission of human immunodeficiency virus ( HIV ) type 1 , and Gardnerella vaginalis is frequently isolated from the genital tracts of women with BV .
folded_tokens: bacterial vaginosis ( bv ) is associated with an increased rate of sexual transmission of human immunodeficiency virus ( hiv ) type 1 , and gardnerella vaginalis is frequently isolated from the genital tracts of women with bv .
labels: B-other_name I-other_name O B-other_name O O O O O O O O O O O B-tissue I-tissue I-tissue I-tissue I-tissue I-tissue I-tissue I-tissue O O B-mono_cell I-mono_cell O O O O O B-body_part I-body_part O B-multi_cell O B-other_name O