14706
These studies show a decreased ability of WS - exposed pulmonary macrophages to effectively mount a defense against infection , the effect lasts at least a week post - exposure , and appears to be mediated via RelB activation .
 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