2646
To further investigate the putative involvement of the phenylpropanoid pathway in the defence of citrus fruit , changes in the metabolic profile of both tissues infected with P . digitatum was studied by means of HPLC - PDA - FD .
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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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