6423
Activation of TLRs by microbial lipoproteins may initiate innate defense mechanisms against infectious pathogens .
 microbial lipoproteins, TLRs
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:
 microbial lipoproteins, TLRs