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We found that NHDF cells treated with BAE after UVB - irradiation suppressed MMP - 1 , MMP - 3 , and IL - 6 levels compared to the AE - treated cells .
 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