14385
The parameters of the toxicodynamic model are related to the growth characteristics of algae cells , a no effect concentration , the chemical efficacy as well as the ability of recovery and repair , and the delay during damage propagation .
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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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