7753
We investigated the MAPk kinase ( MKK ) that activates p38 MAPk in response to LPS , the p38 MAPk isoforms that are activated as part of this pathway, and the functional responses affected by p38 MAPk activation .
 p38 MAPk isoforms, p38 MAPk, p38 MAPk, MKK, p38 MAPk, MAPk kinase
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 MAPk isoforms, p38 MAPk, p38 MAPk, MKK, p38 MAPk, MAPk kinase