6140
Furthermore , we found that PSG - 1 acted on Toll - like receptor ( TLR ) 4 , signaled through p38 MAPK pathway , then activated NF - kappa B and stimulated TNF - alpha production .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None