364
In the present study, the role of serine/threonine phosphatases in the regulation of I kappa B alpha phosphorylation was investigated.
 serine/threonine phosphatases, I kappa B alpha
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:
 serine/threonine phosphatases, I kappa B alpha