4547
The influenza virus NS1 protein is a unique posttranscriptional regulator that has two activities : inhibition of the nuclear export of poly A - containing mRNAs and inhibition of pre - mRNA splicing .
 NS1
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 NS1