Large amounts of viral RNA and particles were synthesized in infections established using the tat mutants that contain modified LTRs .
large amounts of viral rna and particles were synthesized in infections established using the tat mutants that contain modified ltrs .
O O O B-RNA_family_or_group I-RNA_family_or_group O O O O O B-other_name O O O B-protein_family_or_group I-protein_family_or_group O O B-DNA_family_or_group I-DNA_family_or_group O