22560
However , the mechanism of their actions should be further elucidated ; the particular constituent responsible for toxicity should be isolated and identified , and the target tissue and mechanism of toxic ingredients also deserve to be further investigated ; more reference substances should be prepared , and sophisticated analytical technologies should be developed to comprehensively assess the quality of Curculigo herbs .
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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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