tokens: Virus stocks obtained from these experiments exhibited a continuum of replicative capacities in different human T-cell types depending on which element ( s ) was present in the LTR .
folded_tokens: virus stocks obtained from these experiments exhibited a continuum of replicative capacities in different human t-cell types depending on which element ( s ) was present in the ltr .
labels: B-virus I-virus O O O O O O O O O O O O B-cell_type B-cell_type I-cell_type O O O B-DNA_domain_or_region O O O O O O O B-DNA_domain_or_region O