2963
Basic helix - loop - helix proteins can act at the E - box within the serum response element of the c - fos promoter to influence hormone - induced promoter activation in Sertoli cells .
 GENE: Basic helix - loop - helix proteins; GENE: c - fos promoter
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: Basic helix - loop - helix proteins; GENE: c - fos promoter