889
These results indicate that the PCNA gene is a likely target gene of E2F .
 GENE: PCNA gene; GENE: E2F
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: PCNA gene; GENE: E2F