6592
Although with a lesser degree than E ( 2 ) , the pro - inflammatory stimulation with lipopolysaccharide ( LPS ) also induces the increase of Ngb protein levels via nuclear factor - ( NF ) kappa B signal ( s ) .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None