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In this study , we prepared extracts of 27 Saudi Arabian medicinal plants which belong to 18 different plant families and tested their ability to induce NAD ( P ) H : quinone oxidoreductase in murine hepatoma cells grown in microtiter plate wells .
 Chemical: NAD ( P ) H; Chemical: quinone
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: NAD ( P ) H; Chemical: quinone