tokens: We used a rev- and RRE defective HIV type 1 ( HIV-1 ) molecular clone in complementation experiments to establish a method for the rapid isolation of posttranscriptional regulatory elements from the mammalian genome by selecting for rescue of virus replication .
folded_tokens: we use a rev- and rre defective hiv type 1 ( hiv-1 ) molecular clone in complementation experiment to establish a method for the rapid isolation of posttranscriptional regulatory element from the mammalian genome by select for rescue of virus replication .