4191
MA would be a beneficial nutritional therapy to ameliorate CS - induced lung injury via preserving antioxidant defense mechanisms , decreasing oxidative stress and inhibiting ER stress , autophagy , apoptosis and emphysema - related risk factor .
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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