8254
The results of this study suggest that NF - kappaB activity may be regulated by its interaction with the cell cycle regulatory protein , E2F - 1 .
 GENE: NF - kappaB; GENE: E2F - 1
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: NF - kappaB, E2F - 1 
Answer:
 GENE: NF - kappaB; GENE: E2F - 1