677
The pulmonary effects observed , became more pronounced with increasing NO2 concentrations ( 0 , 25 , 75 , 125 , 175 or 200 ppm , 1 ppm NO2 = 1 . 88 mg m - 3 NO2 ) and exposure times ( 5 , 10 , 20 or 30 min ) .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities:  
Answer:
 None