20558
Thereafter , a comparison of effect values , regardless of the causative mechanisms , should be made , firstly to determine if endocrine toxicity generates the lowest endpoint within a taxon , and secondly if it is the lowest endpoint compared to that of other taxa living in the same compartment .
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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