2798
Our data indicate that the various subunits of the human P - TEFb complex may play distinct roles at multiple stages to mediate Tat activation of HIV - 1 transcription elongation .
 GENE: P - TEFb; GENE: Tat
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: P - TEFb; GENE: Tat