8947
Chronic obstructive pulmonary disease is characterized by dramatic alterations in lung architecture associated to an exaggerated inflammatory process , alveolar epithelial cell apoptosis , endothelial dysfunction and extracellular matrix destruction due to a protease and anti - protease imbalance .
 None
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