6506
The 5 ' flanking regions of both pelA and pelB were translationally fused to the beta - glucuronidase gene and introduced into F . solani f . sp . pisi , and beta - glucuronidase activities of the transformants were measured .
 pelA, pelB, beta - glucuronidase gene, beta - glucuronidase
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 pelA, pelB, beta - glucuronidase gene, beta - glucuronidase