No RNA-packaging defect could be measured for any of the mutant viruses as determined by quantification of their HIV genomic RNA .
no rna-packaging defect could be measured for any of the mutant viruses as determined by quantification of their hiv genomic rna .
O O O O O O O O O O O O O O O O O O B-RNA_family_or_group I-RNA_family_or_group I-RNA_family_or_group O