28761
Cu exhibited a reversal tendency , i . e . , the element concentrations in naturally grown mushrooms were significantly higher ( 43 . 57 mu g / g dry weight for C . cibarius and 43 . 54 mu g / g for B . badius ) than in cultured in vitro mycelium ( 12 . 47 mu g / g for C . cibarius and 4 . 17 mu g / g for B . badius ) .
 Chemical: Cu
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: Cu