7401
Our results demonstrate that the promoter and enhancer regions identified here are essential for maintaining the efficient promoter activity of the human activin betaA subunit gene .
 human activin betaA subunit gene
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 human activin betaA subunit gene