18775
Cardiac fibroblasts are activated by a variety of pathological stimuli , such as myocardial injury , oxidative stress , mechanical stretch , and elevated autocrine - paracrine mediators , thereby undergoing proliferation , differentiation to myofibroblasts , and production of various cytokines and ECM proteins .
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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:
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