11841
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 .
 GENE: rev; GENE: RRE
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: rev, RRE 
Answer:
 GENE: rev; GENE: RRE