24401
Compounds having non - specific receptor binding , or involving slowly reversible binding to some receptors that do not contribute to toxicity , may also be time - dependent ; however , their effects depend primarily on the exposure concentration , with time playing a minor role .
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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