7040
The expression of the first two genes located in this unit ( c - gvpD and c - gvpE ) was also monitored by Western blot ( immunoblot ) analyses using antisera raised against these proteins synthesized in Escherichia coli .
 c - gvpD, c - gvpE
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 c - gvpD, c - gvpE