1765
We show also that RA represses the transcriptional activity of a reporter gene containing a TPA responding AP1 binding site driving the HSV tk promoter .
 GENE: AP1 binding site; GENE: HSV tk promoter
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: AP1 binding site, HSV tk promoter 
Answer:
 GENE: AP1 binding site; GENE: HSV tk promoter