tokens: Lipopolysaccharide is a potent monocyte/macrophage-specific stimulator of human immunodeficiency virus type 1 expression .
folded_tokens: lipopolysaccharide is a potent monocyte/macrophage-specific stimulator of human immunodeficiency virus type 1 expression .
labels: B-lipid O O O B-other_name I-other_name O B-virus I-virus I-virus O O B-other_name O