11723
One means of understanding the role of p38 in these responses is to identify proteins with functions regulated by p38 -catalysed phosphorylation .
 p38, p38
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 p38, p38