65521
Occurrence of morphine in other Papaverales and Papaveraceae , as well as in some species of hops and mulberry trees has not been confirmed .
 Papaverales, Papaveraceae
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Papaverales, Papaveraceae