the transcriptional competence of long terminal repeats ( ltrs ) derived from endogenous proviral dna at genetic loci mtv-8 , mtv-9 , and mtv-17 of the c57bl/6 mouse strain was examined with a transient transfection assay in which gene expression was monitored by expression of chloramphenicol acetyltransferase .
C0040649
transcriptional
C0017262
gene expression