8530
To elucidate the regulatory mechanism of human AM gene expression , functional elements of 5 ' - flanking region of AM gene were studied in human aortic endothelial cells ( HAEC ) .
 human AM gene, AM gene
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 human AM gene, AM gene