4417
Studies of HS2 - gamma gene reporter constructs carrying CACCC box deletions revealed that the CACCC box sequence of the gamma gene promoter mediates the activation of the gamma gene by FKLF .
 GENE: HS2 - gamma gene reporter constructs; GENE: FKLF
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: HS2 - gamma gene reporter constructs; GENE: FKLF