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The endoplasmic reticulum ( ER ) stress response constitutes a cellular process that can be triggered by a great variety of conditions that cause imbalances in intracellular homeostasis and threaten proper cell functioning .
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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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