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The results showed a significant difference ( p <= 0 . 05 ) in oral bioavailability of picrosides I and II from different preparations .
 Chemical: picrosides I and II
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: picrosides I and II